2. Cup marked with "PP". "PP" is made of polypropylene, and the glass made of it is crystal clear, beautiful, light and firm. The temperature resistance of this kind of water cup has also been greatly improved. The service temperature is between -30 ~ 140℃, and it can be used for filling hot water or sterilizing at a high temperature above 100℃. Moreover, polypropylene (pp) has a special property, that is, it is the only plastic product that can be heated by microwave oven.
3. Water cups marked with "Tritan". Qutan is also not resistant to high temperature, so it is not recommended to fill it with boiling water. However, one advantage of this kind of water cup is that this material will not produce BPA (bisphenol A) during the synthesis process. Many plastic products contain BPA. Long-term intake of trace BPA may cause children's endocrine system disorder and early puberty. Therefore, this kind of water cup is not recommended for children.
4. Water cup marked "Tritan". Tritan water cups are relatively environmentally friendly and safe. It does not contain BPA, and there are no toxic and harmful substances that affect children's health. In many European and American countries, this is the designated material for baby products, and its safety is relatively guaranteed. Parents can buy them for their children.