... Resistant to ageing,staining and weathering. 2.use on wood,fibreboard,paper,plaster,concrete,masonry surfacea 3.factory sale ... -proofing agent building waterproof agent specification A Detailed description This product is a new type of extremely easy dissolve building ... resistance of polluting, etc. This product can act as a wood, chipboard, paper, gypsum products waterproof material. This product ...