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High quality vacuum mixer manufacturing factory

Best rated vacuum mixer machine manufacturer: Stirring and mixing are the primary steps in polyurethane production, aimed at uniformly mixing various raw materials to form a stable reaction system. Before stirring and mixing, the raw materials may appear dispersed, uneven, and even filled with bubbles. The presence of these bubbles not only affects the appearance quality of the product, but also has a negative impact on its performance. By selecting appropriate mixing equipment and process parameters, it is possible to ensure uniform mixing of raw materials. Mixing equipment such as Shenzhen Smida’s planetary centrifugal mixer can be selected according to production needs. The mixing process includes multiple stages such as pre mixing, low-speed mixing, and high-speed mixing, and each stage requires strict control of parameters such as time and speed. Read even more info on https://www.smidacn.com/planetary-centrifugal-mixer.html.

The Smida planetary centrifugal mixer is a double stirring bracket planetary self rotation and revolution stirring device, which basically eliminates the problems that occur during the stirring process of conductive adhesives. Through 360 ° non dead angle rotation, different components in the conductive adhesive can be evenly and uniformly dispersed, fully mixed, and the conductive adhesive can play a stronger role, greatly improving the preparation efficiency. The method of making conductive adhesives is not complicated. As long as the proportion of raw materials and processing flow are well controlled, efficient conductive adhesives can be easily produced. However, the viscosity and rheological properties of the material, the curing process, and the state of the cured material can all affect the conductive adhesive.

The working principle of the planetary centrifugal mixer is that through the revolution and rotation of the turntable and the stirring motion of the stirrer, the bubbles in the liquid continuously rise upward and burst and disappear at the liquid surface. This equipment uses physical methods without adding any chemicals and has no impact on product quality. Planetary Centrifugal Mixer Has The Following Advantages: It can effectively eliminate bubbles in liquid and improve mixing efficiency and product quality. The equipment has a simple and compact structure and is easy to maintain and operate. Using physical methods without adding any chemicals, it has no impact on product quality. Suitable for bubble removal in different fields, such as chemical industry, food, medicine, etc.

The unique flow of materials in a planetary centrifugal mixer ensures that even the smallest amount of material is homogenized. Simple control over mixing speed and duration enables users full control over material processing. Since planetary centrifugal mixer is a non-invasive mixing technology, there are no blades or other physical inhibitors inside the mixing container which could interrupt flow of material and potentially create “hot spots” in a dispersion.

In the future, with the increase in the application of various new materials, the further development and application of degassing mixers will surely be promoted. This article introduces the working principle of the laboratory vacuum degassing mixer. The planetary centrifugal vacuum mixer can solve problems that traditional mixing equipment cannot solve. The slurry and powder of different components are fully mixed evenly without stratification, bubbles, and high efficiency to meet the high-quality requirements of the mixing process. Read extra details at smidacn.com.

Planetary centrifugal mixers are commonly used in industries such as pharmaceuticals, chemicals, food processing, and materials science. They are suitable for mixing a wide range of materials including powders, pastes, creams, and more. These mixers are versatile and can be used for various batch sizes, making them a popular choice for different production needs. Smida centrifugal planetary mixer mainly used for sufficient mixing and stirring of materials in various fields of products, without layering, bubbles, and high efficiency. Materials of various specifications and weights can be mixed, meeting various stages from testing to mass production.

The biggest difference from the vacuum version is the water cooling machine, which is equipped with synchronous mixing and vacuuming to remove smaller diameter bubbles in the material. At the same time, it can ensure that the temperature during the mixing process is adjustable and controllable. Its rotation speed can be adjusted from the revolution speed. By adjusting at any ratio of 0-2, it can also handle more materials that are extremely difficult to mix evenly. Their maximum single mixing capacity is (2L/2kg) * 2, which can easily meet all the requirements from testing to mass production.

Best rated custom caster wheels wholesale provider

Office chair caster wheels supplier 2024: Our main products are the production and processing of casters, foot cups, assembly line drums, etc.Casters are almost inseparable from all walks of life. In modern times, with the continuous development of science and technology, the equipment has become more and more multifunctional and high-utilization, and casters have become indispensable parts. The development of casters has become more specialized and has become a special industry. Find extra information on medium duty caster wheel.

Casters have many different brake options. The three most common styles of brakes are the side-lock, tech-lock, and total-lock brakes. Side-lock brakes simply tighten down on the wheel hub to cause the wheel to stop moving. Tech-lock brakes have a direct contact with the wheel and keep the wheel from moving with this friction. With both a side-lock and tech-lock, a swivel casters can move around in 360 degrees although the wheel is locked in place. A total-lock brake locks both the tread and the swivel. That means that a swivel caster will no longer be able to move around. Industries (such as medical, automotive, technology) that demand the utmost stability with carts will use total-lock brakes.

There are two main types of caster rig: the kingpin and the kingpinless. The kingpin in particular has variations that make a huge difference, and all of these will differ in 3 main ways: connection to top-plate, maintenance, and the overall design and durability. The kingpin is the base rig for casters and is not suitable for towlines. With a kingpin caster rig, a bolt essentially holds everything together. In some applications, this will become lose and cause the caster to fail. This is the starting point for casters. The kingpinless caster rig connects the top-plate and the fork with ball bearings inside of a hardened raceway. The bearings themselves keep everything together. This is the starting point for towlines.

Our employees who engage in the technical analysis have successfully upgraded technologies mainly to manufacture 5 Inch Heavy Duty Pure Black Rubber Caster Wheel For Dustbin Garbage bin waste container caster in a more efficient way.It has applications in a wide range of fields, such as Furniture Casters. Our professional engineers have expertise in using technologies. It has a wide scope of range and is widely seen in the field(s) of Furniture Casters. The advancement in technology brings us unlimited benefits which include expanded product advantages.5 Inch Heavy Duty Pure Black Rubber Caster Wheel For Dustbin Garbage bin waste container caster is perfect for the area(s) of Furniture Casters. With years of familiarity and expertise in this work area, Zhongshan LP Hardware Co., Ltd. has evolved as an affluent manufacturer and supplier in the market, and there is a great possibility that the company will have a better development in the future.

Varying the tread and material of your caster wheel allows you to navigate these conditions. Second, what is the weight capacity and speed of the application? The faster you move, the more weight capacity you need in your casters. The caster diameter, width, and material will all affect how much weight your caster can handle at high or low speeds. Additional factors should be evaluated to specify the exact caster needed for the application, such as: caster configuration, environment temperature, duty cycle, tread materials, and speed (wheels fitted with ball bearings will have a reduced load capacity at speeds over 3 MPH).

Office chair caster mainly application:Furniture, Carts,Trolly, Office Chair,Our products are deeply loved by customers, high-quality products and considerate service are the best for you to choose us. Thickening process, refined accessories, ultra-low error, anti-extrusion, impact resistance. Excellent selection:Tough and wear-resistant, long service life, durable, easy to drag, non-slip and silent. Reinforce the bearing:The roller adopts thickened and reinforced shaft, which is not easy to rub. See more details on https://www.wensuocaster.com/.

Quality microbrewery equipment manufacturer and supplier

Top rated nano brewing equipment factory: NFE always insists that Cooperation is just the beginning of good services! We sees cooperated customers as a partner. As a partner, NFE would like to grow together and happy together with all our customers! In 2023,NFE will continue to supply high quality brewery quipment, brewhouse, tanks, brewery solutions, keg washing and filler, can filler, excellent quote and life-long services for our customers. What’s more, we will provide one-stop services from microbrewery planning,technical support,making quotation proposal,layout and utility list to full brewing equipment production,extremely quality control,feedback of production process of all the tanks,shipment help door to door,installation on site and training of brewhouse! We just want to make sure you know what a good brewery system you will get before placing the order and how easy to get and run NFE brewery system after placing the order! We will make it in 2023! Read many more details on nano canning line.

NFE Machinery is the professional brewing equipment manufacturer for over 23years, providing complete beer brewing system. Quality is the soul of a set of beer brewing equipment. High-quality brewing equipment is the key to brewing high-quality beer! NFE, like an artist, always focuses on the details of each tank in order to make a set of bright brewing system for every breweries. We have successfully supplied different sizes of beer brewing machinery and complete systems from 1BBL to 330BBL for over 500 microbreweries in over 40 countries.

A brewery control system is an intricate and indispensable component of any modern brewing operation. Designed to handle the complexities of a brewing system, this advanced technology acts as the nerve center, providing brewers with complete control over every aspect of the production process. At its core lies a sophisticated control panel, meticulously crafted to ensure optimal efficiency and precision in managing all stages of beer production. With intuitive interfaces tailored specifically for brewers, this control panel allows seamless monitoring and adjustment of variables such as temperature, pressure, flow rates, and mixing ratios.

Beer fermentation tanks are specifically designed vessels used in the brewing process to ferment the wort, which is the liquid extracted from the mashing process. The primary purpose of fermentation tanks is to provide an ideal environment for yeast to convert the sugars in the wort into alcohol and carbon dioxide, thereby turning the wort into beer. Beer fermentation tank comes in various sizes and configurations to accommodate different batch sizes and production volumes. They are an essential component of the brewing process, playing a crucial role in determining the flavor, aroma, and overall quality of the final beer product.

Over the years we have designed many different combinations of brewhouse systems. However, the most common would be our 2-vessel with a mash and lauter combination vessel and kettle and whirlpool combination vessel. With a 2-vessel system you can do double brews – but they can prove to be long days! Once you have the need to do 2+ brews a day then you should look into a 3-vessel brewhouse system. We have mainly done the configuration of mash tun, lauter tun, and kettle and whirlpool combination vessel – but have done mash and lauter combination vessel, kettle and whirlpool. Each has their own pros and cons and it really depends on the brewer and beer styles. Beyond a 3-vessel brewhouse solution you get into a 4-vessel or even 5-vessel brewhouse. This splits each process out into its own vessel,Brewing efficiency will be greatly improved.

Distillery equipment refers to a set of equipment used in the production of alcoholic spirits such as whiskey, vodka, rum, or gin. As a renowned beer brewing equipment manufacturer with years of experience in the industry, NFE Machinery has expanded our expertise to include top-of-the-line distillery equipment as well. Our comprehensive selection encompasses an array of options, including vodka distillery equipment, whiskey distillery equipment, alcohol distiller machines, gin distillery equipment, and rum distillery equipment. Find additional details at https://www.cncraftbrewing.com/.

NFE Machinery Co., Ltd is a professional designer and manufacturer of high-quality complete craft beer brewing system and packaging line in China.NFE moved into the new facility which has 6000 square meters in 2016 in order to meet with the fast development of our company. Since then, more excellent technical engineers and welding engineers joined NFE team. Since 2004, NFE is established and starts to design and make the excellent microbrewery solution and vessels for American and European microbreweries. We always supply one complete service with excellent quality and affordable cost to create the best value for each customer.

Best micro brewery bottling line factory supplier

Quality microbrewery equipment factory: As a qualified China manufacturer of beer brewing equipment, NFE also spent a hard year in 2022 brought by COVID-19, crazy shipping cost and cost rise of the stainless steel and components associated with brewing equipment. Fortunately many customers from America,Canada,Australia,NZ,Europe,trusted us and kept placing the order of full brewing equipment, fermenters,brite tanks,HLT,batching system,beer canning and bottling line,etc. As return, in order to support our customers to get over this hard time, NFE also issued many promotion of beer system to help our customers.The promotion includes reducing price of whole brewing system, expanding the warranty date, free installation service of more than 10bbl/1000L full brewing system, more free components and 10% on price for the breweries who is the second purchase, door to door service in the tanks shipping, etc. All these promotion were carried on well. Customers were very happy. See even more information on https://www.cncraftbrewing.com/products-6266.

Microbrewery equipment is specifically designed for small to medium-scale brewing operations, typically producing between 5 barrels and 20 barrels of beer per batch. Microbrewery brewing system includes all the brewing system which volume is more than 5bbl system. We make the turnkey brewery equipment. The system usally include mash tun, brew kettle, fermentation tanks, hot liquor tank (hlt), cold liquor tank (clt), glycol chiller, control panel, CIP (clean-in-place) system, pumps and piping, grain handling system, filtration system, bright beer tanks, kegging or bottling system, brewhouse automation.

Brewery CIP system is used to clean up tanks and pipelines. We can make all kinds of CIP system from 30L to 5000L, semi automatic and full automatic one. Generally microbreweries use small capacity CIP , such as 50L,100L, 150L,200L. They use Hot Water, caustic, acid water as clean solutions. Welcome to our brewery CIP system category page, where we take great pride in providing top-of-the-line CIP systems for breweries. As a leading beer brewing equipment manufacturer, we understand the critical importance of maintaining cleanliness and hygiene in every step of the brewing process. Our brewery CIP systems are meticulously designed and engineered to offer efficient cleaning solutions, ensuring optimal sanitation within your brewery facility.

We use the best quality air-cooled type beer glycol chiller to work with our beer brewing system. It can be worked together with glycol tank and Cold liquor tank(CLT). Chiller can be CE, UL or CSA certificate. Whether you are a small craft brewery or a large-scale production facility, our beer glycol chillers provide reliable and efficient cooling capabilities tailored to meet your specific needs. We can supply two type brewery control system: Button type, touch screen+PLC type. All the control elements are from Siemens, Schneider, Omron, IFM, Danfoss, etc. Temperature in each tank is controlled automatically and can be set freely. Running speed of all the motors, pumps are changeable by VFD. Touch screen type control panel for the brewing system can set more automatic control points.

Depending on your electricity rate this can be pretty expensive. This is why we generally don’t recommend this heating method for anything over 7BBL brewing system or 10BBL brewing equipment – unless you have crazy cheap electricity. At NFE, we prefer this option better than electric, as you can start heating shortly after covering the bottom of the kettle like steam. You can get good boils from heating elements, but they can also prove problematic for cleaning and also whirlpooling, as they can disrupt the effects. Pros: cheapest installation, low maintenance, easier to installation and operatation. Cons: not the best when using a kettle and whirlpool combination vessel, scorching of wort, no heat source for mash tun.

As time flies, 2023 has gone. 2024 is not a normal year for all the people of the world, suffering COVID-19,wars,economic depression and inflation, international disputes,etc. It is also not a normal year for all the people working on Micro breweries,craft beer bar or pub,tap room, beer brewing equipment suppliers.We all went though with the lock down of breweries brought by COVID,cost rise of beer materials and transport, bank loan rate rise in brewery expansion, shipping cost rise,etc. Many microbreweries and restaurants closed, many had to suspend the dream of setting up a brewery, many had to cancel the purchasing plan of brewing system, and many still insisted to look forward the coming of new spring. See even more information at cncraftbrewing.com.

Our internal polishing procedures guarantee a smooth and flawless finish on all the beer tanks, while our welding processes are perfected to deliver impeccable results. Each step of our assembly process of the beer brewing system is meticulously executed, ensuring that every brewing equipment leaving our facility is of the highest quality. Based on the excellent equipment, we also provide excellent services. Deal is just the start of our service. At NFE family, you will get lifetime engineering service! Installation service on your site, making all the AutoCAD drawings for you, completely free parts replacement in the warranty date, low cost parts supplied out of the warranty, technology support door to door, lifetime consult support.

Hybrid stepper motor supplier by Smooth Motor

Linear actuator stepper motor supplier 2024: Read the article to learn more about the stepper motor’s significance, the easiest way to control a stepper motor, and how to choose one based on important factors. What Is a Stepper Motor? A stepper motor is an electric motor so its main job involves converting electrical energy into mechanical energy. Its shaft turns in fixed steps and moves a certain number of degrees with each step. This feature is possible due to the motor’s internal structure, and you get to know the shaft’s accurate angular position by counting the total steps performed. Moreover, you don’t need a sensor for that so because of this feature it is also the best choice for several applications. Discover a lot more information on custom stepper motor.

No one knows stepper motors like Smooth Motors, so you can trust that we understand the importance of choosing the correct manufacturer. We don’t only sell motors; we build relationships as a professional Chinese manufacturer and supplier with more than a decade of expertise. We go beyond being a supplier and become your automation ally by relentlessly pursuing product excellence, dependability, and compatibility across various applications. Here at Smooth Motors, we value your automation requirements and environmental impact on stepper motors. Reach out to us now to see how our selection of stepper motors can transform your applications.

Laser Equipment: Seamless Integration for High-Speed Precision – Smooth Motor’s stepper motors offer seamless integration into laser equipment, enabling high-speed precision and intricate laser cutting or engraving. These motors, available in various sizes and configurations, can be easily integrated into laser systems, facilitating quick and precise movements of laser heads. Smooth Motor’s stepper motors respond rapidly to commands, allowing laser equipment to follow complex paths accurately, resulting in precise and intricate cuts or engravings on various materials. The compatibility and flexibility of Smooth Motor’s stepper motors make them an excellent choice for laser systems used in industries such as manufacturing, signage, and electronics.

Smooth Motors’ nut assembly is a critical component for precise linear motion control. The anti-backlash nut design minimizes play and ensures accurate positioning, making it ideal for applications that require high precision. Smooth Motors offers nut assemblies made with materials such as POM (polyoxymethylene) and bronze, each with its own unique properties and suitability for specific applications. Moreover, customization options are available to tailor the nut assembly to meet the exact requirements of customers, further enhancing performance and versatility.

The stepper motor can realize step less speed regulation, has a wide speed regulation range, and the speed regulation performance is stable and reliable. Ordinary motors usually control the speed by adjusting the size of the current. The speed regulation range is small and the speed regulation performance is relatively poor. The running noise of stepper motors is relatively small because it has no contact mechanical structure and does not generate noise such as friction and vibration. Ordinary motors will produce certain friction and vibration noise due to their contact mechanical structure. The maintenance of stepper motors is relatively simple because it has no contact mechanical structure and will not suffer from wear and failure. Ordinary motors require regular maintenance, such as bearing replacement and armature cleaning.

Biochemical analyzers, crucial for medical diagnostics, benefit from the precision and reliability of Smooth stepper motors and custom mechanical assemblies. Stepper motors, can stack motors, linear stepper motors and custom assemblies are widely used in these analyzers to precisely control the movement of samples and reagents, ensuring accurate mixing, precise dispensing, and efficient testing processes. This contributes to reliable and timely diagnostic results, supporting effective patient care. Automatic breast pumps rely on the precision and reliability of can stack motors or linear stepper motors to facilitate efficient milk expression. Smooth’s can stack linear motors provide the necessary motion control to mimic the natural nursing process, promoting comfort and convenience for breastfeeding mothers.

Smooth Motor also offers mini motorized sliders, which integrate compact and efficient motors with the Slide Guide Rails. These motorized sliders provide automated linear motion capabilities, making them ideal for applications that require precise positioning and automated control. What sets Smooth Motor apart is its ability to handle the entire process, from manufacturing individual components to the assembly of the Linear Rail Systems. This ensures tight quality control and seamless integration of all components, resulting in reliable and high-performing linear motion solutions.

Smooth Motor’s lead screw and nut assembly is a reliable solution for precise linear motion. The self-lubricated material ensures smooth and maintenance-free operation. The anti-backlash nut minimizes play, guaranteeing accurate positioning. With ACME lead screws, they provide high efficiency and load capacity. Different greases and surface coatings are available for diverse applications. Customization options include various end machining choices to suit specific requirements. Wide Application Range – Already got the electrical specification? Just select the ranges and you will find them. Standard models are the motors which have been in the market and widely used in the applications for prefernce. they are usually in stock, it is ideal prototype.

Smooth Motor’s full series of Permanent Magnet Linear Stepper Motors caters to diverse industrial needs, providing compact, reliable, and efficient solutions for lock systems, medical pumps, mini pumps, medical devices, stage lighting, and more. With stable performance, these motors deliver consistent and reliable operation in various applications ensuring precise and controlled linear movement. Despite their compact dimensions, they possess high torque capabilities. Additionally, Smooth Motors offers customization options, allowing customers to tailor the motors to their specific requirements, further enhancing their versatility and suitability for diverse industrial applications.

With a wide range of products and flexible capacity capability, you can confidently rely on Smooth Motor’s expertise and commitment to innovation for optimized motion control in your industry. Contact us, the professional stepper motor manufacturer, for tailored stepper motor solutions that drive success. Smooth stepper motor manufacturer, where customization meets excellence in motion solutions. Customer-Centric Approach: At Smooth Motor, your success is our priority. Our experienced team works closely with you to understand your challenges and deliver tailored solutions that exceed expectations. Discover a lot more info at smoothmotor.com.

Smooth Motor’s hybrid stepper motors also find application in automated sorting systems used in mailrooms and post offices. These systems require precise movement to sort letters, parcels, and packages efficiently. By integrating our motors, manufacturers can achieve precise and reliable sorting operations, improving accuracy and efficiency in mail and package handling. The versatility and reliability of our hybrid stepper motors make them an ideal choice for automated sorting applications.

Evaluate the Load – Find out how much your application can handle. Realizing the motor’s potential loads requires knowledge of inertia, friction, and weight. Do not expect a motor to do its job well if it is underpowered relative to the load. Keep in Mind The Speed Requirements – Consider the minimum and maximum speeds at which your app must function. Stepper motors come in a range of speeds. Accuracy and Resolution – Stepper motors are selected for their accuracy. The step angle determines the resolution of the movement. Pick a motor whose step angle is less for more accuracy. Energy Source – Make sure that the power source is compatible with the motor’s specifications. Inefficient operation or motor damage might result from using the wrong power source.

inflatable PVC provider in China

Top transparent PVC film manufacturer: PVC film is divided into transparent PVC film, opaque PVC film, translucent PVC film and so on. Transparent PVC film is made of high-quality PVC resin and additives, which give it excellent clarity and transparency. It is typically used in packaging applications where visibility of the contents is important, such as blister packs or clamshell packs. You can choose the appropriate PVC film manufacturers according to the specific use. See more info on https://www.linyangpvc.com/normal-clear-transparent-pvc-soft-film.

Blue, green, and brown PVC tarps are commonly used in industrial and transportation sectors. These tarps are preferred by workers in the construction industry, roofers, farmers, and drivers. Yellow, orange, and red PVC tarpaulin are ideal choices when visibility is a top priority. These vibrant-colored tarps are often utilized to indicate potential danger. White and silver tarps, designed to reflect heat and sunlight, are excellent selections for providing shade for individuals.These PVC tarps are extensively employed in tents, canopies, awning membrane structures, etc.

The width of impermeable PVC Tarpaulin produced by Zhongshan Linyang Plastic Co., Ltd. is up to 6.4 meters. Compared with the narrow-width impermeable PVC Tarpaulin, the advantage of our impermeable cloth is that it can reduce welding procedure, improve waterproof performance, and avoid leakage caused by multiple welding joints. It can also save material and labor cost for customers, because the wider the width is, the less materials will be used and the fewer construction links will be required.

The higher the number of grinding revolutions, the better the wear resistance of the floor. In the wear-resistant rotation test, the general rotation speed of composite floor is 1500-2000 rotations, the rotation number of solid wood floor is 1500-2500 rotations, and the rotation number of ordinary floor (belonging to the multi-layer composite stone-plastic floor in PVC floor) is 5000-60000 rotations Turn (depending on the thickness of the wear-resistant layer of the product).

PVC bag production process: Currently, there are many factory choosing use PVC Film to mass-produce the pvc bag. Like in China, Vietnam, Philippines these labor-intensive countries. They are highly appreciated the benefits of this bag. This plastic make the printing process can work easily. We can screen-print with tightly seal with gold and silver foil in PVC bags. PVC bag production process takes place in a cosmetic bag factory. There are 2 ways: Hot pressing and high-frequency hot press sewing. The production process of PVC bag by high-frequency hot press machine.

It is well known that “clear plastic” is a cheap, flexible and durable item that can be applied to many benefits. both in domestic work and agricultural work. But did you know that, transparent/clear plastic not only to making stationery, mattresses, plastic bags, transparent shower curtains these daily items but also be used for design and decorative work , whether it is home decoration, apartment decoration, garden decoration, shop decoration, office decoration, coffe shop decoration or even producing into packaging. Read extra information at https://www.linyangpvc.com/.

As one of best PVC film & pvc tarpaulin manufacturers, for our business scope, we mainly produce and sell PVC tarpaulin, Flex Banner, PVC film. We adopt non-woven, weaving, and knitting technology to achieve the great advantages of products’ high strength, heat and cold resistance, chemical resistance, and light resistance. At the same time, we also provide one stop and customized products are exported to many countries, which have win wide acclaim from customers.

ABS is the main material of the plug-in building blocks, and the three letters represent the three substances of “acrylonitrile, butadiene and styrene” respectively. The main reason for using ABS for building blocks is that its dimensional stability is good, and the toys made can keep the size and height consistent. At the same time, ABS has high hardness and toughness, and will not become brittle even at low temperature (low temperature resistance -40°). And wear-resistant. In general, ABS is non-toxic and harmless, resistant to high temperature, low temperature and corrosion, but it does not mean that it can be scalded with boiling water.