Sinomach Diamond (Henan) Co., Ltd.(SINOMACH-DIA) is subordinate to China National Machinery Industry Corporation (SINOMACH), and the controlling shareholder is Sinomach Precision Industry Group co.,Ltd(SINOMACH-PI).

SINOMACH-DIA , jointly funded and established by SINOMACH-PI and Henan New Materials Investment Group Co., Ltd, take responsibility of the mission of leading the high-quality development of the superhard materials industry. SINOMACH-DIA focuses on consolidating and enhancing the international competitive advantages of the superhard materials and products industry chain, and focuses on the main directions of raw and auxiliary materials, key equipments, structured application, functionalized application, fostering the new consumption of laboratory-grown diamonds, and standard testing services, and its business covers the key links of upstream, midstream, and downstream of diamond industry. We are striving to build a world-class diamond industry group driven by science and technology.