Henan Ruiguang Mechanical Science & Technology Co., Ltd ,a member of Ruiguang Group; is a large-sized joint-equity enterprise which specialize in producing edible oil mechanical equipment and it is also a group enterprise integrating scientific research ,manufacturing ,sales as one .Research Institute of Machine Design Company and Henan ,Henan University of Technology (formerly the Zhengzhou Grain College) school-enterprise cooperation in the oil equipment to carry out long-term ,protein extraction ....