Jiangsu Zhong Shi Jewelry Testing Center is located in Crystal Market, Donghai County, Lianyungang City, Jiangsu Province, and registered by the administrative department for industry and commerce. Xinjiang Zhongyujian Jewelry and Jade Quality Inspection Center is the authoritative jewelry and jade inspection institution in Xinjiang Uygur Autonomous Region and the third-party social appraisal institution in Xinjiang Uygur Autonomous Region. Its business scope includes jewelry and jade appraisal, evaluation and training. Therefore, these two institutions are real.