1. Only two weighing steps, the purity% of precious metals and gold karat can be tested rapidly and Accurately. 2. No stains and scratches left on your gold after testing, it doesn t need to use....
Group Prospers Enterprise Co., Ltd is a professional manufacturer of electronic densimeter, we have worked in this area for about 20 years. We have jewelry densimeters/ gold tester and industry....
Pao Fong Industry Co., Ltd.. Was founded in 1986, and started processing conventional milling machines. In order to meet market' s need and upgrade business level, The Company keeps increasing new....