Zhengzhou Sino Crystal Diamond Joint Stock CO., Ltd., was established in 2004. We concentrate on the development, production and sales of superhard materials and their products, raw and auxiliary materials and the development of synthetic diamond equipments. Meanwhile, our company has the professional RD team and gem-equality diamond test center. The test center is professional in the detection of synthetic diamond and its raw materials, jewel and jade single crystal plate, large single crystal, wire drawing die, synthetic diamond, diamond and so on. and so on.