The registration address of ted tianjin technology ltd. Is 200 m south of the village council of wang zhue zhengzhou, tianjin city, and the registration authority is the market supervision authority of the jinghai district of tianjin city, represented by a legal person, and includes the development and processing of steel-restricted technology; welding manufacture and processing; wholesale and retail distribution of metal materials, construction materials, hardware equipment, chemical products (other than dangerous goods and preparations for drugs); greenhouses research and development, design, manufacture, installation, maintenance; import and export of goods, import and export of technology (other than those restricted by laws and regulations). (projects subject to legal approval may not operate without the approval of the relevant department)