Yancheng Dongrong Petroleum Machinery Co., Ltd., established on 2014-08-18, The scope of business includes the manufacture of oil drilling machinery and accessories,research and development,Sales and after-sales service,Drilling Equipment Leasing and Technical Services,Screw Drill Repair,Tubing and Drill Pipe Repair,rubber products,hardware,electrical appliance,Network Security Appliance Sales,Network system deployment and maintenance,Monitoring security engineering,Computer Network Technology and Software,the hardware,Industrial automation control engineering development,design,Install,debugging.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)