Aviation: rotating turbine engine parts, machine carefully beam, the wing root, transmission shaft, etc
Oil: rocker arm, hydraulic cylinder, oil, diamonds, sucker rod, drilling pipe, etc
The ship reinforcement: chain, chain, shafts, valves, engine connecting rod bolts, propeller blade, etc
National defense, military industry, firing pin, camshaft, compressor blades, turbine, engine, etc
Machine improved: milling cutter, punching machine tool, the back wheel, etc
Building reinforcement: package, cladding, skirting board, stainless steel doors, underground high-strength guard rail, etc
Car: engine parts, springs, stabilizer bar, wheel, gear, etc