Short glass: high stability and reliability, higher chemical stability, high temperature resistance and mechanical strength than other glasses. Short glass can maintain stable performance under various environmental conditions, is not easy to be corroded by chemicals, and can withstand high temperature environment and mechanical stress.

2, sapphire glass: high cost. The process of sapphire crystal is complicated and time-consuming, and sapphire glass is fragile. Sapphire glass will crack or break when it is subjected to strong impact or stress concentration.