Giảm tốc vô cấp (Variable Speed Drive) It is easy and increasing the outer cover products of aluminium alloy newly for the structure to maintain and maintain lightly · The bearing capacity with high efficiency of the transmission operates the steady noise strongly low · Range heavy to change speed ratio into 1:6 characteristic kind transmission to transfer speed · Wave line combined to can meet ultralow rotational speed heavy torsion change speed to transmit with gear wheel