Check out if the thickness meets the requirements, and if necessary, measure it with a vernier depth gauge. A magnet should also be prepared to check whether the selected plate is iron or aluminum.
Check out whether the surface of the aluminum plastic plate is smooth, whether there are ripples, bubbles, defects, scratches.
Break off the corner of the aluminum plastic plate at will, if easy to break, it is not PE material, or it is adulterated with counterfeit materials;Then you can use a lighter that you carry with to burn it. If the real PE should be completely burned, there will be impurities after burning with fake and shoddy materials.
Take two pieces of aluminium plastic sheet samplesto scratch each other a few times, see if drop lacquer. The aluminum plastic with good surface painting quality adopts the imported hot-pressing spraying process. The color of the paint film is uniform, the adhesion is strong, and it is not easy to remove the paint after scratching.
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