Henan Huanghe Whirlwind Co. Ltd. was founded by five major shareholders including Henan Huanghe Enterprised Group, Osaka Diamond Co.ltd. (Japan), Zhengzhou Research Institution for Abrasives and Grinding, etc. As one of the largest enterprises in China, the company was listed on Shanghai Stock Exchange on November 26, 1998, and has developed into a diversified, high-tech enterprise undertaking sicentific research, production, trade and finace. We are specialized in six industrial fields and professinally supply over 146 kinds of products vevrified over 400 specifications including Synthetic Diamond, CBN, Coated Diamond, Diamond Micron Powder, Diamond Tools, USD series Presser, Construction Machinery, Special Vehicle, Automatic Control System, etc. As a leading company in Synthetic Diamond and Diamond Tools in China, we were awarded 2 National Gold Prizes and 128 Scientific Promotion Prizes and we have alreadly got 76 patents in recent years. Our products have gained high reputation in global market such as Japan, America, Europe and South-east Asia, etc.