PVC, PP, PET, which material box is hard.
① polyvinyl chloride (PVC)
It is the largest amount of plastic used in construction. The density of UPVC is 1.38-1.43g/cm3, the mechanical strength is high, the chemical stability is good, the use tem
PVC Raw Materials Price Down
As of Friday's close, the price difference between pvc2001 contract and 2005 contract is 240 yuan, which shows a strong trend in recent months.
In the spot market, the domestic PVC spot market pe