Girth Gear, Gear Shaft, Hollow Shaft manufacturer / supplier in China, offering CNC Forging Planetary Gears for Excavator Gearbox, Custom Casting Steel Helical Gear Large Diameter Ring Gear Big Girth Gear for Rotary Kiln, Custom Forged Large Stainless Steel Main Double Helical Herringbone Gear Shaft for Mechanical Equipment and so on.