Shen Guojian is a testing institution with national certification qualification, and its testing report is credible. The National Jewelry Inspection and Testing Center is a professional quality inspection institution for jewelry and jade authorized by the relevant national authorities according to law, and it is the authority on jewelry and jade inspection in China.

Shen Guojian Jewelry Testing Co., Ltd. was established on June 27, 20 14, and its legal representative was Zeng Lei. Its business address is located at 6-06, Floor 6, Wanshan Jewelry Garden 1 Building 42, Tianbei 4th Road, Cui Jin Community, Cuizhu Street, Luohu District, Shenzhen, and the industry serves scientific research and technology.