Zhong Jian Jewelry and Jade Testing Center is a legally established institution specializing in the quality testing of precious metals and jewelry and jade with the approval of relevant state departments, and has passed the evaluation of China Jewelry and Jade Quality Testing Association (CMA). It is a fair third-party gold, silver and jewelry testing institution, and the reports and certificates issued by it have legal effect, and undertake the entrusted inspection of precious metals, jewelry and jade products nationwide.

The agency has a high-quality professional testing team and a number of quality inspectors engaged in precious metal testing, jewelry and jade identification and diamond grading.