Bucking Unit manufacturer / supplier in China, offering High-Efficiency Hydraulic Power Tong System Ynjg400 Complete Casing & Tubing Bucking with Integrated Pre-Tightening, Reliable Eco-Operation Bucking Unit Ynjq120/06 High-Torque Motor with Guaranteed No-Mark Performance, Advanced Dual-Action Bucking Unit Ynjq400 High-Efficiency Push/Pull with No-Scar Clamping and so on.