Suitable for automatic proportioning of new, sub materials, concentrates or additives etc. The required rotating speed (rpm) is automatically calculated according to the preset mixing ratio and the conditions set by the microcomputer control system. The measurement is accurate and the error value is ±1%. The product has two modes, suitable for injection molding and extrusion molding of plastics. Screw diameter can be divided into 12,16,20, 25...lmported DC brushless motor can be used to evolve various models, and provide different output of 0.1~100kg/hr for customers to choose. In addition, the dual color master machine is matched according to the customer's needs to meet the use of different occasions and different Digital microprocessor can process masterbatch & regrind material by metering accurate percentage. Using brushless DC motor features free from maintenance and long service life. Module dismantled design, easy for change screw and sleeve. The dosing unit i s removed from