[13375621123] [QQ962678930] Hakusan Hakusan Drainage Board Drainage Board @ @ @ @ @ @ White Mountain White Mountain Drainage Board Drainage Board Drainage Board @ @ @ @ Hakusan Hakusan Hakusan Drainage Board Drainage Board @ @ @ @ @ @ White Mountain White Mountain Drainage Board Drainage Board - Plastic drainage board (mainly for leak-proof drainage - green roof, floor and roof construction, underground garage roof, interior water seepage underground works, and intelligent channeling line); set of drainage, seepage of water into one, greatly reduced project cost, with the fulcrum 
 Plastic sandwich board "is a" row + block + block "model of new waterproofing and drainage materials, are green roofs, roof insulation, roof of the best basement waterproofing methods to ensure that project never leak. 
 With the traditional "pebble layers of waterproof material +" method compared to the product has to save construction costs, improve project quality, to prevent leakage of engineering, construction is simple and convenient to reduce the roof load, while energy saving, thermal insulation, sound insulation, water storage , moisture and other characteristics. 
 Used: green roofs, flat roofing, underground project 
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