[13,375,621,123] manufacturers supply ￥% H20mm garage roof plastic drain! 441 * 441 * 20 water board sale! ￥ 1) drain and geotextile laying is complete, not directly on the plastic plate carts; staff to be careful to walk, not free to destroy Road stampede drain. 
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 3) the amount of earth-moving vehicles prohibited from accessing the roof area. 
 4) the main building during the construction period to prevent falling objects smashed drain. 
 6 safe and civilized construction 
 1) The drainage board and geo-Busch working hours, to stop all the surrounding hot work. 
 2) the main building during the construction period to prevent falling objects wounding. 
 3) The drainage board, geotextile fabric to be used with the collar, the progress of earth fill area should be balanced, the construction work to another channel at the other staggered. 
 4) transport of earth, scattered on the road to promptly clean up the soil, frequent watering to prevent road dust, construction vehicles, the door to flush out the remnants of the tire on the soil.