PVC PVC (PolyVinylChlorine) is generally classified into 7 levels based on the hardness and properties of the material (SG1-SG7), with a density of 1.4 g/cm ³ Left and right. SG4 and below are...
Synthetic resin is a high molecular weight polymer synthesized from chemical raw materials, widely used in fields such as packaging, construction, agriculture, household appliances, and automobiles....
Event: Recently, the domestic carbon black price has increased by 300 yuan / ton, the price of N330 in Shandong Province is 5200-5500 yuan / ton, that of Shanxi Province is 5000-5200 yuan / ton, and...
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