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人们生活中所用塑料袋主要有两种,一种是用来包装食品的无毒的聚乙烯塑料袋,另一种是用于包装某些用品和工业用品的聚氯乙烯塑料袋。聚氯乙烯塑料在生产过程中,要添加
There are mainly two kinds of plastic bags used in people’s life, one is a non-toxic polyethylene plastic bag for packaging food and the other is a polyvinyl chloride plastic bag for packing certain supplies and industrial products. PVC plastic in the production process, to be added