Yongji city Huatai Gold Trading Information Consulting Service Center, whose office address is located in Yuncheng, Guan Yu's hometown, and Yinxing West Street, yongji city, Yuncheng (Sunshine Jiadi Community 1# Building 104); The office address of yongji city Xicheng Laomiao Gold Store is located in the jewelry area cabinet group 1-B2 on the first floor of yongji city Department Store in Yuncheng, Guan Yu's hometown.
There are six methods to detect gold, including visual inspection, bromination test, magnet test and density test. Only a few metals have higher density than gold, bite test and ceramic scratch test.