There are a lot of materials that we don’t know are widely used in daily life, such as PP materials, household utensils and containers such as plastic bowls, cups, boxes, etc. are all made of PP materials, so in the end PP What material is it? h
PET sheet is a new type of plastic product recently developed in recent years, so what is the difference between it and our traditional plastic? First of all, the production process of this material is more complicated. It is produced through a series of