Coarse grain color machine features: adopts ultra-high speed sensor electronic eye. The new 4 mm small air gun (1200 times/SEC), injection are accurate. In numerical control machine, wave meter, voltmeter, ammeter, temperature measurement table, simple operation, which is convenient to use. Air gun self test function, can prevent the effect the color chosen by the failures of the air gun. Vibrating feeder, smooth evenly. Slide and tubes are equipped with heating plate, can adjust the most suitable operating temperature. The high-performance integrated block, can greatly reduce the failure rate, save power consumption. Stainless steel silo, avoid moisture rice bran cause equipment rustiness, snake, mildew. Circuit and optical components adopt full sealed structure, achieve dust-free working environment, guarantee the stability of equipment work.