2. Window frame material: aluminum alloy open frame; Galvanized plate frame, stainless steel frame, etc.
3. Column material: steel pipe column; Galvanized steel molding column, stainless steel edging column and stainless steel laser drilling column are made of different materials according to different shapes and different material requirements;
4. Windows: 6 mm and 8 mm screen-printed porcelain with black-edged tempered glass. Acrylic, durable board, etc.
Some billboards have the shape of ceiling. Generally, the materials used for ceiling modeling include galvanized sheet, stainless steel, tempered glass, laminated glass, durable board, sunlight board, etc.
The bulletin board has two functions: internal and external communication.