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Disadvantages of glass
1, fragile

2, easy to cut hands

3, airtight, airtight

4. First, tempered glass can no longer be cut and processed. Only the glass can be processed into the required shape before tempering, and then tempered.

Secondly, although the strength of tempered glass is stronger than that of ordinary glass, tempered glass has the possibility of self-explosion when the temperature difference changes greatly, while ordinary glass does not.