The quality of the purification board itself is very light, about one-twentieth of the weight of the concrete roof; and its own thermal insulation performance is also very good, and its own thermal conductivity coefficient is very small, which mainly depends on The material of the interlayer; the construction speed of the purification board is very fast, and it basically does not need to be used for secondary decoration; the color of the purification board can also be painted according to the requirements of actual use; the purification board also has certain Waterproof effect; the purification board can be reused, reducing the waste and pollution of materials.