Development and sales of computer software; development and consulting services of mechatronics; technological development of intelligent traffic control systems; design and construction of safety prevention systems; manufacturing: environmental testing instruments and equipment; wholesale and retail: Wujinjiaodian, chemical industry (except dangerous goods and precursor drugs) , clothing and shoes, textiles, auto parts, motorcycle parts, mechanical and electrical equipment, cultural and office supplies, anti-static products, glass products, plastic products, handicrafts (except gold jewelry), ore powder; installation and maintenance of instruments and meters; sewage treatment; civil engineering construction industry.