Zhengzhou Yongsi Commecial&Trading Co., Ltd, located in Zhengzhou, which is a large engineering machinery manufacturing enterprise which focus on research and development, production and sale kinds of drilling rigs.Our drilling rigs are widely applicable for water well, farm irrigation, geological prospecting, road construction,pile foundation, geothermal air-conditioner and so on.We insist on the strategy of technology research and development. Technical design, material purchasing, precised manufacturing and strict quality inspection are all processed according to the ISO9001 standard. Our company experienced 10 years of high-speed development, gathering large number of talents and winning sound reputation and credibility. Our product quality, rapid and healthy development ensured by convenient transportation network, advanced management concepts, and comprehensive management system.We sincerely expect to cooperate with various circles, achieve mutual benefit and win-win situation.