Improve the quality of China's diamond tools from the craft

The survey results show that China's total stone output, stone export volume and stone consumption have reached the world's first place: there are more than 20,000 stone processing enterprises, nearly 5 million employees, with an annual output of 6 million cubic meters of stone, with an annual output of 120 million square meters. Rice, with an annual output value of more than 80 billion yuan, has more than 500 advanced production lines, and imports and exports totaling more than 1.2 billion US dollars, becoming a veritable stone production country.