Second-class medical device production general items: Intelligent power transmission and distribution and control equipment sales, Lighting fixture manufacturing, Lighting fixture sales, Technology intermediary services, Lamp sales, Power distribution switchgear control equipment manufacturing, Power transmission and distribution and control equipment manufacturing, Automotive parts and accessories manufacturing, Automotive parts and accessories research and development, Railway locomotive and rolling stock parts manufacturing, Railway locomotive and rolling stock parts sales, Mechanical and electrical equipment manufacturing, Mechanical and electrical equipment sales, Mechanical equipment research and development, Electrical signal signaling equipment manufacturing, Electrical signal signaling equipment sales, Electrical equipment sales, Power distribution switchgear control equipment research and development, Power distribution switchgear control equipment sales, Automotive decoration product manufacturing, Automotive decoration product sales, Software development, Electronic specialized equipment manufacturing, Electronic specialized equipment sales, Industrial design services, Professional design services, Municipal facility management, Mining machinery sales, Second-class medical device sales, Technical services, technology development, technical consulting, technology exchange, technology transfer, and technology promotion.