Sertipiko ng Produkto CQC-JD UL VDE-X2 KC-JY ENEC-JD IEC--JY TUV Sertipiko ng System ISO 9001 2015 IOS9001 IOS14001 ISO 14001 2015 Awtorisadong Ahente LOA ng Polytech International INC. LOA ng Yingdian (Shanghai) Supply Chain Co., Ltd.