The service life of a glass is an interval. For new cups, it is ideal to use them for about 4-6 months if they are used normally. Of course, it also depends on the material of the cup. For those ordinary glasses, normal use is no problem. But if it is some high temperature resistant, easy to dye glasses, it can not be used for too long. If in the process of use, a long time can not be used, put there without attention to maintenance, then it is easy to break. The glass should not be heated in the microwave because the material is very sensitive to the microwave. The glass heated in the microwave oven is easy to produce harmful substances, which is very harmful to the human body. If the glass turns yellow or has other changes during use, it is necessary to replace the glass in time. In addition, when using glass products, do not use hard and sharp things to scratch the surface. If this is done, it will lead to small holes or scratches on the surface (this phenomenon is very common in general glass products). Because this part is very fragile, it is easy to crack after being scratched, and it is not easy to repair.
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