1. Look at the surface gloss, the poor gloss is UV print pvc board

　　 2. Look at its toughness, pvc board has excellent toughness and can be bent slightly

　　3. Look at the cut surface. After the recycled plastic is cut, there will be miscellaneous materials of different colors inside

　　4. Look at its density. The density of Pvc is 0.92~0.93. All the materials floating on the water are polypropylene.

　　 5. Heat and weld it, and there will be smoke when welding recycled plastic

　　6, transmittance, poor transmittance of recycled plastic

　　 7, toughness, recycled plastic is also much worse.

　　 8, density, throw it in the water to see if it floats on the water, most of the regenerated ones sink to the bottom.