The material of the cup is good or bad for the body

1. If the porcelain on the enamel cup falls off, the metal of the cup body will be exposed. Pouring hot water into such a cup may increase the risk of harmful metals leaching out, causing damage to the nervous system and immune system. 

2. Glass cups containing lead. If this toxic heavy metal element is ingested by the human body for a long time, it will cause an increase in blood lead concentration and affect intellectual development and nervous system. When buying glass cups, you need to pay attention to the quot;lead-free quot; label.

3. Colorful quot;glacier" cups. Colorful glacier cups are favored by consumers because of their beautiful appearance. However, these colors may be added through electroplating, spraying, etc. The chemical elements and heavy metal components exceed the standards and may damage the liver, kidneys, and central nervous system. Systemic risk. 

4. For PC plastic cups, hot water will precipitate bisphenol A, which will affect the human endocrine system, even affect the normal functions of the immune system and nervous system, and induce the migration of cancer cells. When using plastic cups, you can check the logo on the bottom of the cup and try to choose products made of No. 5 PP material, which can hold hot water.

5. Inferior stainless steel cups and inferior stainless steel thermos cups are prone to precipitate heavy metals such as chromium, which are more likely to enter the human body with the water after pouring hot water. It is recommended to choose 304 stainless steel and 316 stainless steel, which have better corrosion resistance at different temperatures. 

6. Overglazed ceramic cups are safe in most cases, but for overglazed cups, the color material is directly exposed on the surface of the cup. If the color material is of poor quality or the firing process is improper, heavy metals may exceed the standard. problem. Using such a cup to hold hot water may aggravate the precipitation of heavy metals, posing potential health risks. When distinguishing, you can feel the texture. The inner walls of the under-glaze and under-glaze colors are smooth and clean, without any harshness to the touch, and there is no obvious boundary at the edge of the pattern; while the over-glaze colors are relatively rough.