Semi Automatic Concrete Dosing Machine，Dosing concrete by timer only ,not by weight control. Concrete feeding not so accurate. Pneumatic feeding door design, can avoid concrete wasting. it add the weight control unit and digital control screen, it will keep feeding the concrete in a more accurate way..Both Timer dosing and Weight Dosing, multiple switch, more accurate. Digital sereen touch PLC cabinet, easy operation. It is the best choice for the middle scaled concrete product factory.