Calculation rules of quantities (doors and windows, paint, others)
[Introduction] Quantity calculation rules (doors and windows, paint, others) PPT format Page 67 Doors and windows are an indispensable part of the room. Up to now, doors and windows have gone through four times: wood, steel, aluminum alloy, plastic steel doors and windows. Ordinary wood doors and windows, color panel corner doors and windows, plastic steel doors and windows, aluminum alloy doors and windows, shutter doors and windows, concrete lattice doors and windows: there are sliding doors, side hung doors and folding doors. Plywood, panel door, glass door, panel door, shutter door and window: in addition to sliding window (including left and right sliding window, up and down sliding window) and flat window (including inner opening window and outer opening window), there is also an upper hung opening window.
