KGH3AIII is an improved  DTH drilling rig as the national requirements of environmental protection,it is Designed and developed based on KG915/KGH3 platform,it is with Yuchai double-cylinder diesel engine(GB 3),it meets the national requiements of Emissions,the multi-angle boom for drilling lower horizontal hole.its hydraulic system and and hydraulic cylinder have been improved.It is assembled with dust collector,it is suitable for environmental standards.