... , roof panel, tile, door, window, frames and lines, decorative materials, ceiling, roman pillar, lamp plate, furniture and so on.Quality: ISO9001 ... hygroscopic, no deformation, good tenacity.5 Heat insulation, sound insulation, the index of the sound insulation has reached 50dB.6 Promoted by the ... a tube threaded installation of the lightweight hollow-shaped wall. Ceiling Medallion