Cheap and simple production, rough material, not exquisite workmanship, easy to break, poor cold and heat resistance.

2, the price difference

Theoretically, expensive glasses are better than cheap ones. Take crystal glass for example, expensive ones often contain no lead, and cheap ones often contain lead. Lead-free glasses are more expensive than ordinary glasses, so the price is naturally high.

3. Differences in process materials

For example, the composition of crystal glass is silicon dioxide, which does not contain lead or has a low lead content, and is generally a high-grade product. This kind of crystal glass is expensive. The common crystal glass in the market is basically made of artificial crystal, which is cheap, but the lead oxide content is as high as 24%, which will cause harm to people's health early.

Extended data:

It is best to clean the glass cup immediately after each use. If it is too much trouble, you should also wash it at least once a day. You can wash it before going to bed at night and then dry it. When cleaning the cup, not only the cup mouth, the cup bottom and the cup wall can not be ignored, especially the cup bottom, if not cleaned frequently, a large number of bacteria and impurities may precipitate.

It is not enough to wash the cup with water. You might as well brush it with a brush. In addition, because the important component of detergent is chemical synthetic agent, it should be used carefully and washed with clear water.

If you want to clean a cup with more oil stains or tea stains, you can squeeze toothpaste on the brush and brush it back and forth in the cup. Because toothpaste contains both detergent and very fine friction agent, it is easy to wipe off the residual substances without damaging the cup.

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