The registration address of tenedy energy-saving technologies (chambers) ltd. Is located at the eastern kiln head village of the town of guangcheng, liangang city, in the province of hebei. The registration authority is li xina, the county market supervision authority, represented by legal persons, and covers general projects: technical services, technology development, technical advice, technology exchange, technology transfer and diffusion; the manufacture of insulation and soundproofing materials; the sale of insulation and soundproofing materials; the manufacture of building blocks; the sale of building blocks; the manufacture of light construction materials; the sale of light construction materials; the manufacture of non-metal minerals; the sale of non-metal minerals and products; the sale of building decoration materials; the sale of building materials; and the import and export of goods. (in addition to the projects subject to legal authorization, the activities are carried out on an autonomous basis in accordance with the law under a business licence) (a project subject to legal approval may only be carried out with the approval of the relevant department, subject to the approval documents or licences of the relevant department)