Characteristics of grain color sorter: ultra high speed sensor electronic eye is adopted. The new 4mm small caliber air gun (1200 times / s) can spray accurately. There are digital control instrument, waveform meter, voltmeter, ammeter and temperature meter, which are easy to use and easy to operate. The special anodizing process can ensure the output and make the products reach the international first-class level. It can be equipped with waterfall flat plate and narrow chute channel to meet the color selection of a variety of materials. LED lighting system with heat dissipation has long service life, low energy consumption and good performance. Different raw materials need different spectral lighting, and light sources can be customized according to customer needs. Advanced image acquisition system + intelligent image processing algorithm + high-quality nozzle system = excellent rejection rate.