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CNAS (China National Accreditation Service for Conformity Assessment) laboratory accreditation, CMA (China Metrology Certification) laboratory accreditation, CCS (China Classification Society) product testing and testing organization accreditation Qualified suppliers for well-known enterprises such as Huawei, ZTE, CATL, Xinwangda, ATL, Zhongchuangxin Aviation, Yiwei Lithium Energy, NIO, Xiaomi, SAIC General Motors, BYD, Geely, GAC, BMW Brilliance, TBEA, Zhuhai Guanyu, InBev, WMS, Weiling Automotive Parts, China Shipbuilding Heavy Industry, Guangqi Technology, and Envik High tech enterprises, specialized and innovative small giant enterprises, industrial technology basic public service platform of the Ministry of Industry and Information Technology, member unit of Dongguan Advanced Technology Industry Development Promotion Association, and vice president unit of Dongguan Inspection and Testing Association