The mineral fiber rock composition of the present invention is physiologically decomposable and contains, by weight, the following components: SiO2 30 - F255 51 Al2O3 11.5 especially 13-25 CaO2 F255 23 MgO 0-15 Na2O + K2O 10-19 TiO2 + Fe2O3 6-18 Other: 0-3. ŕ
展开▼