G.A.T is invested by ZhongShan Jun Ye Jia An Te Electronics Co.,LTD. As a high-tech company specializing in the research, production, sale and service for master alloy used for Jewelry, our company cooperates with scientific research institutions such as College of Materials Science and Engineering at Shenzhen University and Shenzhen Key Laboratory of Special Functional Materials. Our company manufactures a wide range of master alloys for different karat, color for the jewelry manufacturer