Why glass lid are great 

1.Heat Resistance Test：Place the glass lid in an oven preheated to 200℃ and maintain the temperature for 60 minutes. Immediately transfer the lid to room-temperature water upon removal. The lid shall show no signs of breakage or cracking.

2.Impact Resistance Test：Suspend a 225g steel ball at a height of 1.5 meters and allow it to fall freely onto the lid at the position of 1/3 of its radius. Repeat the test three consecutive times. The lid must remain free from damage or cracks after the test.

3.Dishwasher Compatibility Test：Subject the lid to 50 consecutive cycles of dishwasher cleaning. After the test, the lid shall not exhibit discoloration such as yellowing or darkening; additionally, the stainless steel rim must show no loosening or deformation.

4.Destructive Test：Strike the lid with a hammer to induce breakage, then conduct an inspection. Within any 50mm×50mm area of the broken fragments, the number of particles shall be no less than 50, and the mass of the largest fragment shall not exceed 3 grams.