3 thoughts on “Where can I detect the authenticity of gold? ‘”
Marshall
1. National Jewelry Quality Supervision and Inspection Center
The National Jewelry Quality Supervision and Inspection Center is a national quality inspection institution authorized by the State Administration of Quality Supervision and Inspection in accordance with the law. The National Secretariat of the National Jewelery Standardization Technology Commission has hosted and revised national standards and industry standards.
2, the jewelry and jade jewelry management center of the Ministry of Land and Resources
is a national jewelry and jade professional quality inspection institution authorized by the State Administration of Quality Supervision and Inspection and Quarantine. It has passed the national -level measurement certification, the laboratory ISO/IEC17025 approval of the laboratory of the China Laboratory Council, and the review and recognition of the national product quality supervision and inspection agency. It is an authoritative institution in domestic jewelry and jade testing.
This Metal Jewelry Building:
1. recognition of precious metal jewelry inspection results
The precious metal jewelry sold on the market, most of which are equipped with quality inspection institutions Appraisal certificate and certificate. The identification certificate and the certificate clearly marked the purity and quality of precious metal jewelry (only for jewelry for quality settlement).
2, recognize precious metal jewelry marks
precious metal jewelry marks refer to the logo printed on precious metal jewelry. my country's national standard GB 11887 stipulates that
Themail content of precious metal jewelry should include: manufacturer code, materials and purity marks. When precious metals with different materials or different purity make jewelry, materials and purity should be expressed separately. When the jewelry is too thin and small, the print cannot be printed, and the logo containing the mark content should be attached.
The true and false testing of gold can be performed at the brand's counter. Zhou Dafu, Lao Fengxiang and other old stores are the golden test center, and there are such institutions in the local area. Now the fish is mixed. What are the sand gold? When you look at it at first glance, it will become darker and no gloss. When you buy gold, you must go to a regular shop with a more prestigious prestige.
National Jewelry Quality Supervision and Inspection Center The National Jewelry Quality Supervision and Inspection Center is a national quality inspection institution authorized by the State Administration of Quality Supervision and Inspection and Quarantine in accordance with the law. Division unit to host and revise national standards and industry standards. 2. The Jewelry and Jewelry Management Center of the Ministry of Land and Resources is a national jewelry and jade professional quality inspection institution authorized by the State Administration of Quality Supervision and Inspection and Quarantine in accordance with the law. It has passed the national -level metrological certification, the laboratory ISO/IEC17025 approval of the laboratory of the China Laboratory Council, and the review and recognition of the national product quality supervision and inspection agency.
1. National Jewelry Quality Supervision and Inspection Center
The National Jewelry Quality Supervision and Inspection Center is a national quality inspection institution authorized by the State Administration of Quality Supervision and Inspection in accordance with the law. The National Secretariat of the National Jewelery Standardization Technology Commission has hosted and revised national standards and industry standards.
2, the jewelry and jade jewelry management center of the Ministry of Land and Resources
is a national jewelry and jade professional quality inspection institution authorized by the State Administration of Quality Supervision and Inspection and Quarantine. It has passed the national -level measurement certification, the laboratory ISO/IEC17025 approval of the laboratory of the China Laboratory Council, and the review and recognition of the national product quality supervision and inspection agency. It is an authoritative institution in domestic jewelry and jade testing.
This Metal Jewelry Building:
1. recognition of precious metal jewelry inspection results
The precious metal jewelry sold on the market, most of which are equipped with quality inspection institutions Appraisal certificate and certificate. The identification certificate and the certificate clearly marked the purity and quality of precious metal jewelry (only for jewelry for quality settlement).
2, recognize precious metal jewelry marks
precious metal jewelry marks refer to the logo printed on precious metal jewelry. my country's national standard GB 11887 stipulates that
Themail content of precious metal jewelry should include: manufacturer code, materials and purity marks. When precious metals with different materials or different purity make jewelry, materials and purity should be expressed separately. When the jewelry is too thin and small, the print cannot be printed, and the logo containing the mark content should be attached.
The true and false testing of gold can be performed at the brand's counter. Zhou Dafu, Lao Fengxiang and other old stores are the golden test center, and there are such institutions in the local area. Now the fish is mixed. What are the sand gold? When you look at it at first glance, it will become darker and no gloss. When you buy gold, you must go to a regular shop with a more prestigious prestige.
National Jewelry Quality Supervision and Inspection Center
The National Jewelry Quality Supervision and Inspection Center is a national quality inspection institution authorized by the State Administration of Quality Supervision and Inspection and Quarantine in accordance with the law. Division unit to host and revise national standards and industry standards.
2. The Jewelry and Jewelry Management Center of the Ministry of Land and Resources
is a national jewelry and jade professional quality inspection institution authorized by the State Administration of Quality Supervision and Inspection and Quarantine in accordance with the law. It has passed the national -level metrological certification, the laboratory ISO/IEC17025 approval of the laboratory of the China Laboratory Council, and the review and recognition of the national product quality supervision and inspection agency.