Yes Zhongjinjian Jewelry and Precious Metals Testing Center has passed the qualification certification of national product quality supervision and inspection institutions. Zhongjinjian Jewelry and Precious Metals Testing Center is true, and Zhongjinjian Jewelry and Precious Metals Testing Center is true. Zhongjinjian Jewelry and Precious Metals Testing Center has advanced and complete jewelry and jade testing instruments and equipment, and carries out jewelry and jade testing in strict accordance with the national jewelry and jade testing standards.