B 1 grade rubber-plastic insulation board, with completely closed-cell structure, low thermal conductivity and lasting good insulation effect; The material is completely isolated from water vapor, does not absorb water, does not condense and has a long service life. After SGS testing, the measured value is far lower than the EU standard value of non-toxic substances, and it is healthy and safe to use. Soft and beautiful appearance, easy to bend, convenient and fast construction, no need for other auxiliary materials.