The registration authority is the data office of the new technology development area (ninou district) for the non-tinite high-technology industry, with representation from legal persons, including general items: sale of high-quality special steel materials; sale of metal chains and other metal products; manufacture of metal chains and other metal products; sale of non-ferrous metals and alloy materials; sale of fire-resistant materials; sale of new metal functional materials; sale of metal products; research and development of metal products; sale of non-ferrous metal alloys; sale of metal structures; sale of metal structures; sale of moulds; sale of machinery for construction; sale of fresh ceramic materials; sale of rare earthen materials; sale of rare earthen materials; wholesale distribution of gold products; sale of seals; wholesale distribution of craft and collections (other than ivory and its products); sale of electrical equipment; sale of mechanical equipment and mechanical equipment; sale of mechanical equipment; sale of mechanical equipment; sale of mechanical equipment and repair instruments; sale of electrical equipment; and sale of mechanical equipment equipment to be used for the purpose of the law; sale of mechanical equipment; sale of mechanical equipment; sale of mechanical equipment and mechanical equipment; and repair equipment; and