聚对苯二甲酸乙二醇脂（PET）瓶坯推荐性行业标准（征求意见稿）编制说明

For personal use only in study and research; not for commercial use薇《包装容器 聚对苯二甲酸乙二醇酯（PET）瓶坯》肄推荐性行业标准