Certifikata e produktit CQC-JD UL VDE-X2 KC-JY ENEC-JD IEC--JY TUV Certifikata e Sistemit ISO 9001 2015 IOS9001 IOS14001 ISO 14001 2015 Agjent i autorizuar LOA e Polytech International INC. LOA e Yingdian (Shanghai) Supply Chain Co., Ltd.