Silicone trademark (also known as Zhenglikang trademark) is made of liquid silicone oil and solid silicone by vulcanizing machine heating in the mold. According to its properties and components, it can be divided into two categories: organic sand and inorganic sand. Inorganic siliconium is a kind of highly active adsorption material, which is usually prepared by the reaction of sodium silicate and sulfuric acid, and a series of post-treatment processes such as aging and acid bubble. Silica gel is insoluble in water and any solvent, non-toxic and tasteless, environmental protection, chemical stability, in addition to strong shout, hydrofluoric acid does not react with any substance. Various types of silica gel form different microporous structures due to their different manufacturing methods. The chemical composition and physical structure of silica gel, determines that it has many other similar materials are difficult to replace the characteristics: high adsorption performance, good thermal stability, chemical stability, high mechanical strength.

PVC rubber seal trademarks are mainly plastic products made of plastic products made by dropping liquid materials into molds through plastic drip process, heating, baking and cooling for a period of time, and finally pouring molds. The main components of PVC rubber seal are DNP oil, PVC powder, stabilizer, soybean oil prepared into liquid state silicone trademark and PVC rubber seal trademark the main difference is that the material feel is different, silicone high environmental protection coefficient, can be measured in the European Union, PVC rubber seal smell is strong, environmental protection coefficient is not high, it is more common in the domestic market