PP,PE 楼猪说的都是铝箔袋材料.防静电材料等级一般分为4种等级低充电材料：同其他材料也包括它自己分离和摩擦的只产生最小电流的包装材料（摩擦起
PE+PET膜和PET/AL/CPP相比哪个的气体渗透性更好
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