When buying and using ceramic tableware, pay attention to the following points: 1. When buying ceramic tableware, you must choose a formal market, and you must not be greedy to buy inferior products without official manufacturers. According to national regulations, if ceramic tableware is soaked in 4% acetic acid, the amount of lead dissolution shall not exceed 7 mg/liter, and the amount of cadmium dissolution shall not exceed 0.5 mg/liter. The products of regular manufacturers can basically meet this requirement; 2. When buying, pay attention to the color of the tableware, touch the surface of the tableware with your hands to see if the inner wall is smooth; 3. Use your nose to smell whether there is any peculiar smell; 4. Do not buy ceramic tableware with too bright colors. In order to make the color brighter, the manufacturer will add some heavy metal additives to the glaze. Therefore, the brighter the color tableware, the more likely the heavy metal will exceed the standard; 5. In-glaze and underglaze tableware with strict control of raw materials and process should be purchased.

When buying and using ceramic tableware, pay attention to the following points: 1. When buying ceramic tableware, you must choose a formal market, and you must not be greedy to buy inferior products without official manufacturers. According to national regulations, if ceramic tableware is soaked in 4% acetic acid, the amount of lead dissolution shall not exceed 7 mg/liter, and the amount of cadmium dissolution shall not exceed 0.5 mg/liter. The products of regular manufacturers can basically meet this requirement; 2. When buying, pay attention to the color of the tableware, touch the surface of the tableware with your hands to see if the inner wall is smooth; 3. Use your nose to smell whether there is any peculiar smell; 4. Do not buy ceramic tableware with too bright colors. In order to make the color brighter, the manufacturer will add some heavy metal additives to the glaze. Therefore, the brighter the color tableware, the more likely the heavy metal will exceed the standard; 5. In-glaze and underglaze tableware with strict control of raw materials and process should be purchased.

Thelevelofceramictablewareisgenerallydividedinto:Level1:Thewholeproducthasnodefects,deformationorcolordifference,andapinholeinaninconspicuousplaceisallowed;Level2:Therecanbe2-3pinholes,noobviouscolord

Ceramictableware,fromtheroughestearthenwaretothefinestfinepotteryandporcelainbelongtoitsscope.Themainrawmaterialforitissilicatemineralsderivedfromnature(suchasclay,feldspar,quartz,etc.),soitbelongstot

1.Classificationofceramiccrafts1.BeijingcloisonneFeatures:Cloisonneisakindofceramiccraftwork.Itismadeofredcopper.Itismadeofthingoldorcopperwirestoformvariouspatterns.Themiddleisfilledwithenamelglaze.T

Chemical ceramics are ceramics used to manufacture acid corrosion-resistant parts in chemical equipment. Generally not used for tableware. Ceramics have a long history in my country and the craftsmanship is also very good. Therefore, ceramics are widely used. Tableware is only the most common in life. Chemical ceramics use plastic clay, feldspar, burnt gemstones or alum. After mixing with soil and other raw materials, it is made into a green body through the processes of pulverization, mud smelting, slicing, manual tamping, printing blank, and pouring, and then it is calcined at high temperature. According to the category, there are pumps, blowers, printing machines, valves, containers, towers, packing, acid and temperature bricks, etc. It has excellent corrosion resistance (except hydrofluoric acid and concentrated hot alkali). In all inorganic and organic acids and other media, its corrosion resistance, wear resistance, and non-polluting media are far beyond the ability of acid-resistant stainless steel . It is widely used in petrochemical, fertilizer, pharmaceutical, food, paper, smelting, chemical fiber and other industries. The operating temperature range is -15～100℃, and the temperature difference should not be >50℃. Main disadvantages: brittle quality, low mechanical strength and poor resistance to rapid changes in cold and heat. In recent years, high-strength and high-density silicon nitride, silicon carbide, silicon oxide, and alumina special chemical ceramics have emerged. However, ordinary chemical ceramics made of silicate minerals such as clay still have the advantages of low price and easy production of large sizes. The part of ceramic tableware that may be harmful to the human body is the heavy metals contained in the pigments added on it after firing, so choose no pattern or the pattern is colored with uranium. Judgment method: look at whether the pattern is convex or smooth. The convex is generally an applique process. There will be pigments, and the color will fade after a period of use.