double gear/constant gear/spur gear/helical gear 1.OEM processing 2.Excellent quality and competitive price ... double gear/constant gear/spur gear/helical gear: Used for the the HOWO, SINOTRUK, STEYR, GOLDEN PRINCE ... gearbox and all others related spare parts. We can supply gearboxes (S6-90, QJ805, 5S-111GP(A), 5S-150GP etc), its ...