ceiling grid light weight,good strength,cauterization resistant,water &fire resistant, passed ISO9001. ceiling grids1) Size (H x W):a) Main ... Metalwork Co., Ltd. is a leading professionalmanufacturer of ceiling systems in China.Our main products are light gage steel ... joists, stoving varnish channels, gypsum boards and PVC gypsum ceiling board.With the strength of light weight,cauterization ...