2. Many glassware can be heated by microwave oven, such as microcrystalline glass, titanium oxide crystal glass, borosilicate glass, etc. The glass material has stable physical and chemical properties and is very resistant to high temperature, which is very suitable for long-term use in microwave ovens at one time.

3. The glass and bottle made of ordinary glass are only suitable for three minutes in the microwave oven. If it takes too long, it is likely to break down. Carved glass, tempered glass and crystal glass are not uniform in materials and have poor high temperature resistance, so they are not suitable for use in microwave ovens.