Research, development, production, technical consulting, and technical services for intelligent automation equipment; manufacturing, processing, and sales of mechanical parts, hardware parts, metal structural parts, vehicle parts, fasteners, aluminum products, and molds; metal cold working; sales of metal materials, rubber products, plastic products, decorative materials, chemical raw materials and products (excluding hazardous items); self-operated and agent import and export of various commodities and technologies, except those restricted or prohibited by the state.