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There are many reasons for the black spots or impurities in the effervescent tube body. It is necessary to investigate one by one, find the exact cause, and control each production process in order ...
112021.05
It can be processed into high-density polyethylene bottles by injection, extrusion, blow molding and other methods and used in ph...
The above is about the meaning of the triangle symbol at the bottom of plastic packaging bottles. In fact, in recent years, plas...
102021.05
Manufacturers and distributors of dietary supplements and dietary ingredients are prohibited from marketing products that are adu...
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