Zhangjiakou Xuanhua Jinke Drilling Machinery Co., Ltd (JK Drilling) is a Chinese large manufacturer of innovative drilling rigs including DTH blast hole drilling rigs(JK830, JK810, JK730, JK650, JK590 etc),top-hammer blast-hole drilling rig (JK410) and well drilling rigs (JKS400 , JKS500, JKS600, JKS1000,truck mounted drill rigs etc) which are used for hydro-power engineering, open-pit mining, quarrying, road construction, drilling and blasting operation of national defense engineering, deep well drilling of various purpose and other applications.