China Quality Inspection Technology Gold, Silver and Jewelry Quality Inspection Center is located in Beijing, and its English name is Technical Quality of China Jewelry Quality Inspection Center (CQT). Its branches (sub-centers) are all over the country, mainly engaged in the inspection and appraisal of jewelry, jade, raw materials, precious metals and diamonds. This center is an authoritative testing and appraisal institution that has been recognized as qualified by the national quality and technical supervision department in accordance with the National Standards for Accreditation of Laboratory Qualification, obtained the metrological certification certificate, and can issue proof data and results to the society. The center has a strong technical force, a group of experienced comprehensive experts engaged in precious metal analysis, jewelry and jade identification and diamond classification, and a high-quality management team. All the staff graduated from national key professional colleges, and obtained the national registered quality inspector of jewelry and jade, FGA international jewelry appraiser, NGTC national jewelry and jade quality inspection, Chinese jewelry and jade appraisal, GIC jewelry appraisal and diamond grading qualification certificates issued by domestic and international authorities respectively. The center has more than 40 sets of imported large-scale and conventional advanced testing instruments and equipment, and its hardware facilities have reached the advanced level of similar domestic testing institutions. The center is managed in strict accordance with international standards, and the inspection work is objective, fair, scientific and accurate, which can effectively control various factors affecting the quality of inspection and appraisal and ensure the quality of inspection work. The center strictly keeps the customer information secret, and the inspection work will never be influenced by any commercial interests and outside world, so as to ensure the authority as a fair third party and the principle of independence and justice, make a fair, scientific and accurate evaluation of the quality of jewelry, jade, precious metals, diamonds, jewelry and other products, and accept the acceptance of manufacturers, merchants, consumers, industry and commerce, customs, quality supervision, ...