Zhengzhou Dayu Machinery Co., Ltd. is a leading mining machinery supplier in China, was established in September 1992. Dayu supply drilling rigs and air compressors base on ISO9001,ISO14001 management systems, and are CE,GOST certified.Business scope: Mining crawler drilling rigs, hydraulic drilling rigs, core drilling rigs, rotary drilling rigs, borehole drilling rig, down the hole mining drilling machine, crawler water well drilling rigs, truck mounted water well drilling rigs, diesel movable screw air compressor, electric movable screw air compressor and so on.Dayu drilling rigs and air compressors, are used all over China and have exported to Europe, Russia, the Middle East, Brazil, India, Australia, South Africa, Malaysia, Kazakhstan, Egypt, Peru etc. Read more...