Concrete mixer trucks of various capacity are developed and manufactured on the basis of absorbing the relevant advanced technology home and abroad. Primarily applicable for the concrete transportation and mixing, they can prolong transporting time and guarantee mixing and conveying quality, avoiding layer-by-layer and solidification during transporting in order to guarantee the building progress from German Rexroth and reducer imported from American SAUER Company or German ZF Company, The main components such as the mixing drum and double-screw blades adopt wearing steel-plate 16MnCu materials with the aid of the computer , frame and front-back bed adopt 16Mn steel plate. The movable discharging slot may by fixed at different location such as upper, bottom , left and right to realized discharging operation at various direction. The upper part of the whole truck adopts roasted progress with abreacting shape, steady and reliable slew, quick discharging, low residue rate, convenient operation, long life, etc. It is ideal essential advanced equipment for concrete plant or mixing station without pollution to the road.