Doing Group owns Henan Doing Oil Mechanical Equipment Co., Ltd, Henan Doing Oil Project Technology Company, Xinxiang Doing Renewable Energy Equipment Co., Ltd, and Xinxiang Leeyn Mechanical Equipment Co.,Ltd. Doing Group have been specialized in all kinds of oil equipment researching, designing, manufacturing, selling and installing. Our products: 10-1000 T/D automatic complete set of edible oil seeds (peanut, soybean, sunflower seeds, corn germ, cotton seeds, rice bran, palm) pressing, ...