Ceramic tableware is divided into three types according to ceramic flower surface decoration, each of which is over-glaze, mid-glaze, and under-glaze. Among them, the processing technology of over-glaze is simple and the price is low. But cost-effective is not necessarily a good product. Be cautious when buying, and comprehensively consider the characteristics of all levels of ceramics. When buying ceramic tableware, you must rely on the sales market to buy it, and avoid buying fake and inferior products that do not have a manufacturer. Under normal circumstances, the ceramic tableware is soaked in glacial acetic acid, the total mixing amount of lead should be less than 4mg/L, and the total mixing amount of cadmium should be less than 0.5mg/L.
In addition, you should pay attention to the color of the tableware when buying. Touch the surface of the tableware with your hand to see if the inner cavity is smooth and smell it if it has a strong peculiar smell. There is no need to buy ceramic tableware with excessively gorgeous colors. Generally, the brighter the color of tableware, the easier it is for heavy metals to exceed the standard. It is recommended to buy in-glaze and underglaze tableware with good raw materials. The purchase of ceramic tableware also depends on whether the appearance design of the tableware is correct and whether there are damaged black spots. Tap twice when buying. If the sound is crisp and the quality is good, if the sound is low, it is more common to see inferior products. After buying it back, soak it in edible vinegar and apply it to get rid of harmful substances in the ceramics.
Magnesium porcelain is mainly made of magnesium-saturated talc as the main raw material. It has outstanding characteristics such as high fineness, high toughness, and high heat resistance. Its white and flawless, crystal clear and moist characteristics are the choice of tableware. In addition, ceramic tableware also has the characteristics of corrosion resistance, no heavy metal toxicity, and easy cleaning, which is more suitable for modern families. Magnesium reinforced porcelain tableware is made of magnesia lime powder as the main raw material. It has the advantages of high compressive strength, low ductility, high fineness, and smooth glaze. It is also an ideal product for tableware disinfection. However, the use value of magnesia-reinforced porcelain tableware is higher than that of magnesia porcelain tableware. The main reason is that the service life is longer, the damage rate is low, and the brand image is high.