Product Overview: Shandong Tianhai Composite Drainage and Waterproof Board has a base plate made of high-impact and high-compressive polyethylene (HIPS) and HDPE, capable of withstanding long-term high pressure without deformation. This long-lasting compressive strength can resist the weight of the concrete base plate and its load, as well as the unavoidable external pressures and impacts during construction, such as vehicles, foot traffic, and the impact of concrete pouring. It maintains the base plate's shape over time, thus preserving the original drainage capacity. The filter layer geotextile on the base plate ensures that the drainage channels will not be blocked by foreign materials, such as backfill soil particles or concrete. Product Features: The composite drainage and waterproof board integrates both drainage and waterproofing, successfully resolving the relationship between these two functions. It outperforms traditional stone aggregate and clay drainage and other filtration layers in terms of drainage functionality and economic benefits. The composite drainage and waterproof board is a new product that combines drainage and waterproofing, increasing the durability of engineering projects, with a performance lifespan of up to 120 years. Durability is a crucial aspect of drainage and waterproofing in building structures, raising new and higher requirements for waterproofing solutions. Theoretically, modern flexible waterproofing materials can achieve complete impermeability, but waterproofing systems are often subject to damage, leading to leaks in the environment. The composite drainage and waterproof board can channel and discharge this water, integrating prevention, drainage, interception, and blockage, thus meeting the new requirements of modern building waterproofing systems. Application Range: Widely used in green roofs, outdoor garage tops, retaining walls, basements, tunnels, subways, underground foundation projects, slope protection, and highway subgrade drainage and waterproofing.