The auxiliary materials of floor heating are directly related to the service life of the floor heating. . .
1. If it comes into direct contact with the heat source, the harmful substances will volatilize if not environmentally friendly.
2. Poor quality will lead to cracks in the floor.
It is recommended to read this article about the Baidu experience. "One hundred questions about floor heating: [24] Main materials and auxiliary materials for floor heating"
http://jingyan.baidu.com/article/a3761b2bbec12c1577f9aa11.html