R&D, design, sales and production of various grain and oil food machinery, photoelectric color sorting machinery, mechatronics and environmental engineering technologies and products (branch branches only); software development, application and sales; sales of primary agricultural and sideline products, automobiles (excluding cars), motorcycles, petroleum equipment and accessories; self-operated and agent import and export of various commodities and technologies (excluding commodities or technologies prohibited or restricted by the state). (Projects with special national regulations can only be operated after approval or with a valid license)