2. Chongqing Institute of Metrology Quality Inspection is a national legal metrological verification, quality inspection, calibration and testing research institution established by Chongqing Municipal Government, and it is a social public welfare non-profit institution at the deputy bureau level. It has independent legal status and third-party impartiality. The Quality Supervision, Inspection and Research Center for Jewelry, Jade and Precious Metals is the only legal jewelry and precious metal testing institution in Chongqing that has obtained the national first-class certification and CNAS approval, and it is also the only judicial appraisal institution for jewelry and precious metals in Chongqing.
3. Detection scope: jewelry detection; Diamond 4C classification; Emerald grading; Detection of precious metal jewelry (gold, silver, platinum, palladium) and detection of harmful elements; Gold and silver coating detection; Quality; Identification; Process quality, etc.
4. Service target: to undertake supervision, spot check, arbitration and entrusted inspection by government functional departments such as quality supervision, industry and commerce, public security, justice and customs. Provide batch entrusted inspection services for jewelry enterprises. Provide entrusted inspection services for consumers. Provide jewelry knowledge consultation and popularization services for all sectors of society.