construction costs, who is cheap on who, as for life, as long as the delivery does not leak when no matter; some construction layers of subcontracting, each layer are To pursue their own interests, the package to the final lack of funds, can only sacrifice the quality of the material, the use of inferior products; there are bold, and even what kind of products you want, what kind of products I produce the so-called agreement processing The Fake and shoddy products, low prices of vicious competition, forcing some of the ability to produce qualified products, enterprises sometimes have to do a good job, the production of inferior products. As a non-leaking connection between the engineering foundation and the building, the building waterproofing membrane is widely used in building walls, roofs, and tunnels, highways, landfills and so on. It is the first barrier to waterproofing the whole project. Engineering plays a vital role. Practice shows that once the project leakage, only the cost of a cost of up to the original cost "
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