Powder metallurgy gears include: bevel gear, dual-gear, gear box gears, planetary gears, ring gear, rack, sector gears, bevel gears, , sun gear, helical gear, gear shaft, flat gears, spur gears, double layer gear, synchronous pulley, helical gear, sprocket, ratchet, multi-gears, micro-gear, small modulus gear, special gear, differential bevel gear, reducer gears, variable speed gear motor, all kinds of precision gears. …