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 The construction of the drainage board 
 Cone penetration units (or hollow cylindrical porous) plastic plate, the high impact polystyrene (HIPS) is made. Cone penetration units (or hollow cylindrical porous) the top layer of bonding a non-woven filter to prevent soil particles through, thus avoiding the obstruction, the smooth drainage channels. Drain board use the advantages of traditional brick tile drainage as a guide filter layer, the use of more pebbles or gravel as a filtration layer, the water discharged to the designated place. Now replace the pebbles with a drain to drain water treatment layer is saving time, effort and energy saving investment, and reduce the building load. Build drainage board, drainage board garage, green drainage board, drainage board lawn, roof garden drainage board, HDPE drainage board, parking lot drainage plastic drain board in Beijing, Tianjin, Shanghai plastic plastic drain drain drain board manufacturers in Chongqing South Province, Hebei Province, manufacturers drain drain drain test manufacturers Yunnan, Liaoning, Heilongjiang drainage board manufacturers manufacturers of plastic drainage board price of Anhui, Hunan Province Drainage Board Drainage Board Drainage Board, Shandong Province, the construction price of the Xinjiang Uygur manufacturers supply plastic drain Jiangsu Plastic Green Drainage Board Drainage Board Jiangxi, Zhejiang, plastic garage roof garden green Drainage Board Drainage Board, Hubei, Guangxi, Gansu HDPE plastic drainage board prices drain manufacturers factory price in Shanxi, Inner Mongolia garage garden Drainage Board Drainage Board Drainage Board plastic model manufacturer in Shaanxi, Jilin garage green area drainage board price - Baoding Drainage Board - Baoding drainage board, drainage board Baoding, Baoding H20 plastic drain, Baoding plastic drain - Baoding 2 cm drain - drain manufacturers Baoding