For traditional inferior PVC seals, you need to understand
For traditional inferior PVC seals, you need to understand PVC is polyvinyl chloride, a plastic product synthesized from 43% oil and 57% salt. Compared with other types of plastic products, PVC uses raw materials more effectively and reduces fuel consumption. At the same time, the energy consumption of PVC manufacturing is also very low. And in the later period of use of PVC products, it can be