The registered address of tianjin heinayan magnetic technology ltd. Is located at the 8th street of linha river, kyinjin state science and technology park, tianjin district, with the registration authority being the market supervision authority of tianjin state district, represented by the legal person wang haibar, which operates on general projects: technical services, technology development, technical advice, technology exchange, technology transfer, technology diffusion; production of magnetic materials; marketing of magnetic materials; leasing of mechanical equipment; surface treatment and thermal processing of metals; manufacture of metal materials; sale of metal materials; manufacture of hardware products; wholesale distribution of hardware products; packaging of goods for transport; sale of construction materials. (in addition to projects duly authorized by law, operating on an autonomous basis under a licence). Licence item: carriage of goods by road (without dangerous goods). (a project subject to approval by law may be carried out only with the approval of the relevant department, depending on the document or licence approved by the relevant department)。