Note: 1. When PVC pipes are used for outdoor rainwater pipes in the above buildings, they are off-white; when steel pipes are used, they have the same color as the outdoor walls
Note: 1. When the outdoor stormwater pipe of the above building adopts PVC pipe, it is gray-white, and when the steel pipe is used, it is the same color as the outdoor wall.
Note: 1. When PVC pipe is used for outdoor rainwater pipe of above buildings, it is gray white; when steel pipe is used, the color is the same as that of outdoor wall<br>