Special equipment manufacturing; general freight transportation. General projects: mechanical equipment research and development; general equipment manufacturing (excluding special equipment manufacturing); general equipment repair; agricultural machinery manufacturing; agricultural machinery sales; generator and generator set manufacturing; pump and vacuum equipment manufacturing; pump and vacuum equipment sales; generator and generator set sales; mold manufacturing; mold sales; agricultural machinery services; mechanical and electrical equipment manufacturing; motor manufacturing; mechanical and electrical equipment sales; mechanical parts and parts processing; mechanical parts , parts sales; pneumatic and electric tool manufacturing; electrical equipment repair; new energy prime mover equipment sales; new energy prime mover equipment manufacturing; pneumatic and electric tool sales; technology import and export; import and export agents; goods import and export; conference and exhibition services; power dynamometer motor sales; manufacturing and sales: general machinery parts, auto parts, motorcycle parts; sales: instruments, wires and cables, industrial appliances; goods and technology import and export business.