1. Observe the appearance. Place the bowl under light. If there are bubbles, protrusions, or uneven bottoms on the bowl under the illumination of light, it is generally a defective product.
2. Touch the surface with your hands. When purchasing tableware, touch the surface with your hand to see if it is rough or smooth. If the surface of the tableware is rough, it is a low-quality product and it is not recommended for consumers to purchase; You can also touch the patterns on the tableware. If they are raised, it means they are glazed, and it is not recommended to use such tableware.
3. Smell the tableware. Ordinary ceramic tableware does not have any odor. If there is a strange smell when smelled, it indicates that the quality of the tableware is problematic.
4. Listen to the sound of tableware. If the sound produced when lightly tapping porcelain is crisp and pleasant, it indicates that the porcelain body is fine, dense, and without cracks or damage; If the sound is dull, it can be concluded that the porcelain body is cracked or not fully vitrified. This type of porcelain is prone to cracking due to changes in temperature and heat.
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