- Gold karat tester GP-120K
- 2017-01-13 17:25
- Functions:1. Only two weighing steps, the purity% of precious metals and gold karat can be showed rapidly and accurately
- Gold Tester GP-300K
- 2016-11-18 19:45
- 1. Only two weighing steps, the purity%of precious metals and gold karat can be tested rapidly andaccurately.2. No stain