GTC 變速箱 GTC Gearbox
GNP40-5-8-30-46-M4
GNP4O-5-8-3O-46-M4 GNP40583046M4 GNP40一5一8一30一46一M4 GNP40-S-8-30-46-M4 6NP40-5-8-30-46-M4