For example, what is usually worn on rainy days is different from what is worn in some special mission environments. In different mission environments and usage conditions, the quality and material of rain boots are different, then come Under normal conditions, there are many kinds of materials that can be used to manufacture this kind of products, such as what kind of rubber material is used, as well as pvc and polyvinyl chloride, etc.
So let’s not talk about other materials, just say that the polyvinyl chloride among these three materials, when the product is manufactured, is that because the amount of additives used is different, it can still be divided into soft polychloride. Products made of ethylene, hard PVC, and soft PVC are very smooth to the touch and have a good feel. Although they are soft, they are very tough and have relatively stable functions. There is no need to worry about the time of use, because it is not easily corroded by acid and alkali materials, and the heat resistance is relatively good, but it has a very intense pungent smell.