The registration address of the porthead state company limited for mechanical manufacturing is 1,000 metres south of the village council of the town of goiju, in the city of goizhou, hebei province, and the registration authority is the market supervision authority of the hooping city, representing guo dandan, operating on general items: drawing, computing and surveying instrument manufacturing; marketing of drawing, computing and surveying instruments; manufacturing of machine-bed parts and accessories; marketing of machine-bed parts and accessories; manufacturing of several controlled machine beds; marketing of several control machine beds; metal cutting machine beds; marketing of metal cutting machines; metal cutting and processing services; metalworking machinery manufacturing; manufacturing of metal cutting and welding equipment; marketing of metal cutting and welding equipment; processing of metal surfaces and heat processing; sale of high-energy non-ferrous metals and alloying materials; manufacturing of metal materials; sale of metal materials; manufacture of mechanical parts, parts and components; sale of machinery parts; repair of metal products; sale of metal products; professional design services; services for industrial engineering; service for services (without labour dispatch); import and export of goods. (in addition to projects subject to authorization under the law, the operation of the business is carried out autonomously under a licence)