At present, SIG has passed the technical certification of IATF 16949 and VDS 6.3 which were audited by the most stringent and authoritative organization in the world-TÜV Rheinland. And also passed the GB/T 19001-2016/ISO9001: 2015 quality management system certification, GB/T 24001 -2016/ISO14001: 2015 environmental management system certification. And has completed the UL safety certification of the USA, CE certification of Canada , 3C certification of China, MFI, IF, and other industry certifications as customer’s requirements.