... Howo concrete mixers: Howo 6x4 mixer; Howo 8x4 mixer including 7m3,8m3,9m3,10m3,11m3 and 12m33. Howo tractors: ... Sinotruk operates more than 30 subsidiaries all over the world including truck factory, diesel engine factory, axle factory, commercial vehicle ... developed more than 500 new products in recent years, including HOWO-7 series, HOWO-8 series, STYER KING series, GOLDEN PRINCE series etc...