General

As a sunglasses supplier,   JINGWEI  chooses high-quality lenses of various types and functions. We also customize lenses for specific needs. Here we show you some ideas about taking care of your glasses. Protecting my glasses Eyeglass frames can bend or break when you put enough pressure on them. The lenses are also prone to scratches and cracks. With this in mind, you can purchase rigid eyeglass cases to protect your glasses. When you are not wearing your glasses, be sure to store them in a safe place. A hard case will protect your glasses wherever you are, at home or on the go. Carefully put on and take off your glasses with both hands. When putting your glasses down, keep the curved part of the glasses facing up. Putting them down may cause scratches. Do not allow your glasses to get hot or wear them in extremely hot places. The frames may buckle or the lenses may break. Keep them out of the hot sun. Do not leave your glasses on the dashboard of your car or in other areas ...

Construction grade  hydroxypropyl methyl cellulose (HPMC) , as a new type of construction material, is a non-ionic cellulose ether made from natural refined cotton through a series of chemical processing. It is an odorless, tasteless, non-toxic white or slightly yellow powder, which can be dissolved in water to form a transparent viscous solution. It is used as thickening agent, emulsifier, film-forming agent, binder, dispersant, protective colloid and water retention agent in  construction mortar ​.   Advantages in Construction Materials 1. Dry-mix formulations containing hydroxypropyl methylcellulose are easily mixed with water. 2. Ability to quickly obtain the desired consistency. 3. Such  cellulose ethers  dissolve quickly and do not agglomerate. 4. Easy to mix with dry powder formulations. 5. Cold water dispersion function. 6. Can effectively suspend solid particles, making the mixture smoother and more uniform. 7. improve lubricity and plasticity, enh...

  Rubber capsules  are a type of specialized container that are used in a variety of different industries for packaging and delivery of liquids, gels, powders, and other substances. These capsules are typically made of a specialized type of rubber or elastomer material, which is selected for its flexibility, durability, and resistance to degradation over time. In this essay, we will explore the characteristics, uses, and applications of rubber capsules in more detail, as well as the manufacturing process used to produce them. To begin, it is helpful to understand the basic characteristics of rubber capsules. These capsules are typically small, ranging in size from a few millimeters to several centimeters in diameter, and are designed to be easily filled with a wide range of substances. The rubber material used to make the capsules is typically very flexible, which allows the capsule to be compressed or squeezed to release its contents. The rubber material is also very durable,...

    Automatic dumpling machine   is no manual, just two steps, put the ingredients and kneaded dough into two different feeders, make sure the dough and filling are fed smoothly, turn on the feed switch and adjust the dosage. Then, the complete dumpling will come out automatically, shaped in one go.   We offer a  customizable service  with customizable shape molds to make dumplings, samosas, spring rolls, and meat filled rolls in various shapes and sizes (5-40g). If you need customization, please send us a picture of the finished dumpling and tell us the exact size and weight you prefer.     Dumpling-making machine features 1. The dumpling-making machine is a multi-functional machine that can produce not only gyoza, but also curry corner and spring rolls. 2. The dumpling-making machine adopts advanced technology to automatically press the skin, automatically fill, automatically form and automatically recover the remaining skin. It can make imitati...

 A  single sliding shower enclosure  is a type of  shower enclosure  that has a single door that slides along a track. The door can either slide to the left or to the right, depending on the configuration of the shower enclosure. The door typically slides along the track using rollers, which allows it to move smoothly and easily. Single sliding shower enclosures are a popular choice for those who want a more modern and sleek look in their bathroom, as they tend to take up less space than traditional hinged shower doors. They also tend to be easier to clean, as there is less surface area for soap scum and other debris to accumulate on. There Are Several Factors to Consider when Choosing a Single Sliding Shower Enclosure. Size and Layout You will want to measure the space where you plan to install the shower enclosure to ensure that you choose a size that will fit comfortably and leave enough room for other bathroom fixtures. You should also consider the height of...

  Unlike your running sneakers, your  car's brake shoes   aren't meant to help improve your mile time. They're actually designed to help you stop your car! In fact, brake shoes are an essential element of certain braking systems, and, contrary to popular belief, they are not the same thing as brake pads. Learn what brake shoes are, why they're important, and how they stand apart from brake pads.   WHAT ARE BRAKE SHOES While brake pads and brake shoes perform similar functions, they are not the same thing.   Brake pads are part of a disc brake system. In such systems, brake pads are squeezed together by a caliper against a rotor disc  —  hence the name "disc brake." The pads squeezing against the rotor generate the friction needed to stop the car.   Brake shoes are part of a drum brake system. Brake shoes are crescent-shaped components with a rough friction material on one side. They sit inside of a brake drum. When the brake pedal is pressed, the ...

A   rubber stopper  is a small, tapered plug used to seal the openings of test tubes, flasks and other laboratory glassware. Stoppers made of cork are also available for this purpose. However, rubber stoppers are preferable for applications that require a tighter seal or a greater degree of chemical resistance.   What are stoppers used? A stopper or cork is a cylindrical or conical closure used to seal a container, such as a bottle, tube or barrel. Unlike a lid or bottle cap, which encloses a container from the outside without displacing the inner volume, a bung is partially or wholly inserted inside the container to act as a seal.   What is the purpose of a rubber stopper? What are rubber stoppers?  Rubber stoppers ​ are ideal for plugging joints or holes in laboratory glassware and creating a liquid-tight seal. Rubber bungs are often used with glass containers such as test tubes, flasks, jugs, and many other pieces of standard lab equi...