Road motor vehicle manufacturing, import and export of goods, Class II medical device production; General items: Information system integration services, software development, electrical signal equipment device manufacturing, electrical signal equipment device sales, security technology prevention system design and construction services, radar and supporting equipment manufacturing, traffic safety and control special equipment manufacturing, police equipment production (subject to public security authority qualification recognition), police equipment sales (subject to public security authority qualification recognition), lighting fixture manufacturing, lighting fixture sales, metal product research and development, metal chain and other metal product manufacturing, metal chain and other metal product sales, metal product sales, metal cutting processing services, safety and fire-fighting metal product manufacturing, special labor protection product production, special labor protection product sales, new car sales, fire-fighting equipment sales, security equipment sales, intelligent unmanned aerial vehicle sales, car leasing, Class I medical device production, Class I medical device sales, Class II medical device sales, medical staff protective equipment production (Class I medical devices), medical staff protective equipment wholesale, medical staff protective equipment retail, packaging material and product sales, paper product sales.