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should be in the bag positive, more eye-catching position. The second is to look at the color, in general, most of the color of the plastic bags used recycled plastic waste material, can not be used to hold food. For example, some markets used to hold fish,

shrimp and other aquatic products or meat, black plastic bags, was originally used to install waste, consumers should avoid using. Finally, depends on whether the plastic bags of impurities. Put plastic bags in the sun or light to see if there are black spots, there is

no hole. There are impurities in the plastic bag, is definitely using the waste plastic raw materials. 2, smell the smell of plastic bags, whether people feel sick. Qualified plastic bags should be no smell, and unqualified plastic bags due to the use of additives, will

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