Hongwei Plastic established the laboratory in 2020 and we keep focusing on the quality of products. Each bulk of goods will do the quality inspection before the shipment, also we do have the SGS, CNAS, ISO9001 and other related testing report from the official instution. For the inspection, we mainly check the safety of the material, the strength of the board, the platness of the surface, and make sure if the gsm enough as the order requests. We guarantee every bulk of goods be perfect when we shipping out from our factory.