Business scope includes technology development and transfer, technology promotion and service; sales of mechanical equipment, electronic products, water purification equipment, chemical products, building materials, handicrafts, hardware and electricity (excluding electric bicycle); market survey; enterprise marketing planning; data processing; exhibition; product design. (enterprises can independently select business projects and carry out business activities according to law; for projects that need to be approved according to law, they shall carry out business activities according to the approved contents after being approved by relevant departments; they shall not engage in business activities of projects prohibited or restricted by industrial policies of the city.)