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roduction technology and process of synthetic diamond are becoming more and more mature. China's output of synthetic diamond accounts for more than 90% of the world's total output of synthetic diamond, and has become the largest producer of synthetic diamond in the world. As the quality of domestic products is difficult to meet the industry standard of diamond cutting line and the output of refined nickel is insufficient, most manufacturers rely on foreign imports. The following is an analysis of the current situation of the diamond industry. process of synthetic diamond are becoming more and more mature. China's output of synthetic diamond accounts for more than 90% of the world's total output of synthetic diamond, and has become the largest producer