... 38x35x1220x0.45mm 3,38x35x610x0.45mm 4,25x25x3050x0.5mm groove t-grid are made of galvanized steel and color steel. It ... has three items: main T-bar, middle cross T-bar and wall angle. This production can ... is according to different size of ceiling board. Ceiling T grids has many advantages, include: beauty, good strength, ... kinds of mineral fiber board, aluminum ceiling groove t-grid