Hefei Growking Optoelectronic Technology Co., Ltd, also known as Grotech, is a manufacturer of optoelectronic sorting devices based in Hefei, China. Established in 2011, the company specializes in the R&D, production, and sales of advanced color sorters, holding a leading position in the domestic market for tri-chromatic color sorters. With 101-200 employees and a factory spanning 5,000-10,000 square meters, Grotech offers a wide range of optical sorting machines for various applications. Their product portfolio includes multifunction, industrial, nuts, lentils, seeds, wheat, beans, artificial intelligent, maize corn, belt type, and rice color sorters, designed to sort agricultural products like rice, beans, pulses, nuts, seeds, grains, and coffee beans, as well as industrial materials such as plastics, mineral stones, and glass. The company provides OEM services and adheres to stringent quality standards, holding ISO 9001 certification. Grotech's products are exported to over 40 countries and regions globally, including North America, Europe, Southeast Asia, and Africa, with 71% to 90% of its products being exported.