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原材料价格不断上涨,降低瓶子和盖子的重量,是PET饮料包装行业的每年要做的功课。但是,其中的问题和风险已引起了人们的注意。二次污染
Rising raw material prices, reducing the weight of bottles and lids, PET beverage packaging industry to do homework each year. However, the problems and risks have drawn people’s attention. Secondary pollution