At present, in the plastics industry, there are 7 commonly used plastic models, as shown in the figure below. These 7 plastic models refer to the 7 recycling marks for plastic products formulated by the relevant agencies of the plastics industry in the United States. Its main function is to serve a
READ MOREIf we look closely at our home kitchens and bathrooms, and medicine cabinets, count the types and quantities of plastic bottles: 20? 30 kinds? It is very likely that the packaging of detergent, toilet cleaning liquid, etc. are all in this ranks.
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