Henan Huanghe Whirlwind Co., Ltd. founded in 1978 and listed on Shanghai Stock Exchange (stock code:600172) is the main subsidiary company of Henan Huanghe Enterprise Group Co., Ltd.. There are 22 subsidiary companies distributing in Changge, Zhengzhou, Shanghai and Beijing. We are one of key high-tech enterprise, owning National Enterprise Technology Center and Postdoctoral Workstation. We professionally supply over 148 kind products verified in over 600 specifications, including synthetic diamond, diamond tools and construction machinery. “Whirlwind” series products are ranked as “China Top-Brand Product”, sharing high reputation in global market, QTZ series tower crane is one main kind product of construction machinery. The whole technical level is advanced in domestic. We are owning first-class management team, modern production line of welding and painting, advanced equipment and technology. Pursuing higher quality and perfect after-sale service is our aiming goal. “Best quality, Competitive price, Shortest delivery, Satisfactory service” are our service target. “Trustworthy, Faithful, Cooperative, Harmonious” are our management principle. “United, Creative, Practical, Contributive” are our enterprise spirit.