Mechanical and electrical equipment manufacturing; power distribution switchgear equipment manufacturing; power electronic component manufacturing; electrical accessory manufacturing; power transmission and distribution and control equipment manufacturing; power facility equipment manufacturing; metal structure manufacturing; transformer, rectifier, and inductor manufacturing; mechanical and electrical equipment sales; power distribution switchgear equipment sales; power electronic component sales; electrical accessory sales; power facility equipment sales; metal structure sales; non-ferrous metal alloy sales; electronic component wholesale; electronic component retail; mechanical equipment leasing; non-residential real estate leasing; leasing services (excluding licensed leasing services); electrical equipment repair; special equipment repair; general equipment repair; electronic and mechanical equipment maintenance (excluding special equipment); loading and unloading; road freight transport for general cargo vehicles with a total mass of 4.5 tons and below (excluding network freight and dangerous goods); mechanical parts and components processing; goods import and export; technology import and export. Licensed items: Power generation business, power transmission business, power supply (distribution) business; power supply business.