Rock Testing Machine, Dynamic Fatigue Testing Machine, Impact Testing Machine manufacturer / supplier in China, offering Affordable Impact Testing Machine 300j for Metal/Plastic/Composite Material Shock Resistance Checking, High Capacity Digital 1000kN/2500kN Bolt Torque/Loading Tester for Steel Structure/Bridge/Tower Bolts Testing, Heavy Duty Bolt Torque/Load Tester 1500kN/2000kN/2500kN for M30~M64 Bolts and so on.