... cream-colored, dark sky blue, sea blue, bright red, brick red, ivory white, porcelain blue, etc.5. The ... (Outside) workshop, agricultural warehouse, residential precast unit, corrugated roof, wall, rainwater drainage pipe, terrace, retailer booth, roller shutter ... door(Inside) door, doorcase, light steel roof structure, folding screen, ceiling, elevator, stairway, vent gutter2 ...