the basic version of the free radical (Alkali - Free glass Substrate)

摘要

this invention is the essence of the alkali metal oxide content, but the high point of the drug, but with the use of flow and at the same time, the potential of a free radical with the basic version of the original work, the alkali free radical is the essence of the alkali. the metal oxide contains, as a percentage of the SiO 258.0. 68.0%, Al2O 310.0. 25.0%, B2O 33.0 MgO 0 ~ ~ 15.0%, 2.9%, CaO 10.0 0 ~ 0.1%, BaO. 5.0%, SrO 0.1 ~ 0. 5.0 ZnO 10.0%, 20%, ZrO 5.0 TiO%, 20% of the 5.0 construction.