The main appraisal institutions are: Bao Zhongxie Gemstone Testing Center on the first floor of the affiliated building of the Ministry of Land and Resources, No.30 Xisiyang Hutong; Address of National Jewelry and Jade Quality Supervision and Inspection Center, No.2 A, Datun Road, Chaoyang District, Beijing. We are a member of Southwest Commodity Exchange No.859, and the company is currently attracting investment in the whole country. The conditions and methods for giving returns and rebates to individuals and agents are excellent, and the reply is jointly given by the State Council and Guizhou Financial Office.