DESU has passed many international certification standards such as ISO-9001, ISO-14001, GRS, SGS, ROHS, QS etc. However, because different countries may have their own unique certification standards in the management of PP PS PET Sheet Plastic products, if customers have requirements in this regard when choosing our PP PS PET plastic sheet products, we will try to apply the certification standards for our customers. if for some reasons the corresponding testing or certification is not possible, we hope that customers can choose similar international common standards as a measure