I. National Jewelry and Jade Supervision and Inspection Center (hereinafter referred to as "National Inspection NGTC")

With offices in Beijing and Shenzhen, China Gemstone Quality Shixin Supervision and Inspection Institute, also known as Chisun National Gemstone Quality Supervision and Inspection Center, is a national quality inspection institution authorized by law. It has passed the metrological certification and authorization of the national product quality supervision and inspection institution and the laboratory approval of ISO/IEC 17025, and is the authoritative institution for the inspection of jewelry and jade jewelry in China.

Two. China Geo University Jewellery College Testing Center (GIC)

There are test sites in Wuhan and Shenzhen. China Geo University (Wuhan) established the Gem Research Laboratory on 1983, and developed it into the second-level institution Gem Research Institute of the university. 1992 jewelry college was established with the approval of the Ministry of Geology and Mineral Resources, and 1993 jewelry testing center was established. The center is dedicated to appraisal, consultation, training, exhibition and research.

Third, China Gemstone Association Jewelry Testing Center (GAC)

There are testing centers in Beijing and Shenzhen, and the office of China Jewelry Industry Association has a secretariat. At the same time, there are 8 branches and 8 professional committees according to the professional division of labor. By February 2022, there will be more than 1200 corporate members and more than 500 individual members. Members are distributed in 3 1 provinces (autonomous regions and municipalities) and Hong Kong, Macao and Taiwan regions.

4. National Gold Diamond Product Quality Supervision and Inspection Center

It is a national quality inspection institution for gold and diamonds authorized by the AQSIQ according to law. The center accepts the quality supervision and inspection of gold, jewelry and jade products issued by the state, and has a legal third-party impartial status.

Five, the National Light Industry Jewelry Quality Supervision and Inspection Center (GJC)

It is the first legal quality inspection institution in Shanghai that has passed the metrological certification of the State Bureau of Technical Supervision and the authorization of the State Light Industry Bureau, and has passed many metrological re-inspections.