. Waterproof and thermal insulation function: High density polyethylene (HDPE) has good waterproof, thermal insulation, high strength, good flexibility, and moisture-proof performance. It can effectively reduce indoor noise levels of 14 decibels and 500Hz, with a significant noise reduction effect.
. Water diversion and storage: The size of the gap between the convex joints of the drainage plate determines the drainage capacity and air thickness. There are multiple types of drainage plates with various drainage functions, and different drainage amounts are available on different slopes of the base for designers to choose from.
· High flexibility and compressive strength: The tight configuration in the production process of drainage boards, reasonable design in the convex structure, and the mixing of chemical raw material components make the drainage boards have the softness of high-density ethylene and the hardness of high impact polystyrene, ensuring the strength of the drainage boards. The moderate flexibility makes it easy to load, unload, transport, lay, and construct.
· Good resistance to root puncture: The HDPE drainage board is composed of high-density polyethylene (HDPE), which is resistant to plant root puncture. Applying polyethylene drainage boards on the planting roof can prevent damage to the waterproof layer and structural roof caused by the plant roots, thereby fundamentally preventing roof leakage.
· Simple construction: The continuity of production technology ensures accurate and uniform distance between drainage plate protrusions, thereby ensuring accurate overlap between edge protrusions. The progressiveness of the production process determines the flatness and tidiness of the edge of the drainage panel door. Promoted rapid laying, improved construction progress, and shortened construction period.

· Landscape engineering: garage roof greening, roof garden, football field, golf course, and bathhouse engineering;
Municipal engineering: road subgrade, subway tunnel;
· Construction engineering: the overhead structure of the building roof system, the drainage system of the planted roof, and the basement of the building;
· Moisture-proof and thermal insulation layer for exterior walls and indoor floors;
· Transportation engineering: drainage and waterproofing of highways, railway embankments, embankments, slope protection layers, and tunnels;
· Indoor decoration sound insulation and absorption; Thermal insulation;
· The mezzanine of intelligent buildings can be equipped with drainage boards, and can even cure salt and saline land, desert greening, and so on.

· Clean up the garbage and level the cement on the laying site to ensure that there are no obvious bumps or bumps on the site. The outdoor garage roof and roof garden need to have 2-5%. Looking for a slope.
·Roof greening and outdoor garage roof greening can be equipped with porous permeable pipes, which can concentrate the water discharged from the drainage board to nearby sewer pipes or urban sewers.
· The basement ground is designed to prevent water seepage. A raised floor is built on top of the foundation, which means a layer of drainage board is made before the floor is built. The protruding platform is facing downwards, and blind ditches are left around to prevent groundwater from flowing up. · Water seepage naturally flows into the surrounding drainage ditch through the space of the drainage board, and then into the collection pit through the drainage ditch.
· The basement wall can prevent water seepage by laying drainage boards on the main wall of the building, with the protruding platform facing the main wall. A single wall or steel wire mesh powder can be built outside the drainage board
· Cement is used to protect the drainage board, allowing the space of the seepage board outside the wall to flow straight down into the blind ditch and directly into the collection pit.
· When laying drainage boards in any location, attention must be paid to not allowing soil, cement, yellow sand, and other garbage to enter the front space of the drainage board, ensuring that the space of the drainage board is unobstructed.
· When laying drainage boards, protective measures should be taken as much as possible. When laying drainage boards on the roof or outdoor garage, backfilling work should be done as soon as possible to prevent strong winds from disrupting the drainage board and affecting the laying quality; The basement and interior wall waterproofing should be protected as soon as possible to prevent damage to the drainage board by people or objects.
· Backfill soil is cohesive, and it is ideal to lay 3-5 cm of yellow sand on the geotextile, which is beneficial for the filtration of water by the geotextile; If the backfill soil is a nutrient soil or lightweight soil, there is no need to lay another layer of yellow sand. This soil itself is very loose and easy to filter water.
· When laying the drainage board, it can be overlapped with 1-2 support points on the right side, or two bottom plates can be aligned, and geotextile can be used to overlap on top. As long as there is no soil entering the drainage channel of the drainage board, it can maintain smooth drainage.