(1) National level: National Jewelry Quality Supervision and Inspection Center (formerly under the Jewelry and Jade Jewelry Management Center of the Ministry of Land and Resources), etc.

(2) Provincial level: Yunnan Jewelry Quality Supervision and Inspection Institute (under Yunnan Quality and Technical Supervision Bureau), etc.

(3) Municipal level: Dalian Gold, Silver and Jewelry Supervision and Inspection Center (affiliated to the Product Quality Supervision and Inspection Institute of Dalian Bureau of Quality and Technical Supervision), etc.

2, according to the industry sector.

(1) Quality inspection system: jewelry inspection room of Guangxi Product Quality Supervision and Inspection Institute, etc.

(2) Geology and mineral system: Yunnan Geology and Mineral Jewelry Testing Center, etc.

(3) Gold Company: Guangdong Gold and Silver Jewelry Testing Center, etc.