Dayu Industry Co., Ltd. is the leading manufacturer of drilling rigs and air compressor in china. There are more than 1000 sets of advanced automatic molding production lines, machining center, heat treatment facilities top-rate testing devices and all kinds of machining process equipments imported from the USA, UK, Japan, and Germany. The main products including mining drilling rigs, water well drilling rigs, down the hole drill rigs, rock drill rigs, screw air compressor.