The registration address of the construction materials technology company ltd. In hebei-pu state is located on the western side of the town of changnan, tangshan, hebei province (in the compound of the former king's landing steel factory). The registration authority is the changnan county market supervisory authority, represented by a legal person, and includes general projects: manufacture of asbestos cement products; sale of asbestos cement products; manufacture of light construction materials; sale of insulation and soundproof materials; manufacture of cement products; sale of plastics; sale of plastics; sale of building materials; sale of warm materials. (in addition to projects subject to legal authorization, operating on an autonomous basis under a licence)