Mechanical and electrical equipment manufacturing; power facility equipment manufacturing; electrical equipment manufacturing; electrical equipment sales; traffic and public management metal sign manufacturing; traffic and public management sign sales; metal structure manufacturing; metal structure sales; power distribution switchgear equipment manufacturing; power distribution switchgear equipment sales; electrical machinery special equipment manufacturing; glass fiber and product manufacturing; glass fiber and product sales; rubber product manufacturing; rubber product sales; cement product manufacturing; cement product sales; lighting appliance manufacturing; lighting appliance sales; safety and fire-fighting metal product manufacturing; generator and generator set manufacturing; generator and generator set sales; pump and vacuum equipment manufacturing; pump and vacuum equipment sales; metal wire rope and product manufacturing; metal wire rope and product sales; transformer, rectifier, and inductor manufacturing; electrical signal equipment device manufacturing; plastic product manufacturing; plastic product sales; electrical instrument manufacturing; electrical instrument sales; metal tool manufacturing; metal tool sales; wire and cable operation; special labor protection product production; special labor protection product sales; building decoration material sales; electronic product sales; diving and salvage equipment sales; hardware product retail; fire-fighting equipment sales; security equipment sales; non-metallic mineral and product sales; charging pile sales; fishery machinery sales; mechanical equipment research and development; mechanical equipment sales; building material sales; textile product sales; clothing and apparel wholesale; kitchen, bathroom, and daily miscellaneous wholesale; metal product sales; refrigeration and air conditioning equipment sales; underwater system and operation equipment sales; recreational and sports boat sales; gas compression machinery sales; marine environment monitoring and detection equipment sales; electric-assisted bicycle, mobility scooter, and parts sales; intelligent unmanned aerial vehicle sales; chemical product sales (excluding licensed chemical products); fireproof sealing material sales; coating sales (excluding hazardous chemicals); wood sales; communication equipment sales; special equipment sales; automobile sales; high-efficiency energy-saving technology research and development for the power industry; road cargo transport for general freight vehicles with a total mass of 4.5 tons or less (excluding network freight and dangerous goods).