Julong Group Wuhu Xinglong hydraulic Co. LTDXinglong Hydraulic is more than 30 years of professional coal mine hydraulic support valve research and development, production, sales of high-tech enterprises, is the first to obtain the national standard life class A valve calibration certificate enterprises, the current plant area of 100 acres, more than 400 employees, a total investment of 200 million yuan, High precision machining machine tools, advanced heat treatment equipment and provincial enterprise technology center ensure the "super hard seal" core technology advantage of Xinglong Company's "Xingniu" brand hydraulic valve.