2. Ceramics: Ceramic thermos cups are not common in the insulation industry, and the price will be several times more expensive than other materials. The price of a good ceramic thermos cup may reach thousands of dollars. However, ceramic thermos cups are completely harmless and will not produce harmful metal substances like other materials.
3. Purple Sand: At present, some brand products of front-end thermos cups use authentic pure natural purple sand mud (less output) and stainless steel as the outer layer, but it is the purple sand material that makes the thermos cups have other functions, so the thermos cups with stainless steel as the outer body and purple sand as the inner container are usually called purple sand thermos cups in the industry. Besides the basic functions, it can also make tea, which has the functions of health preservation and conditioning. Strong adaptability to sudden change of cold and heat, no burst due to sudden change of temperature, slow heat transfer and no burning.
4. Glass: Glass is a very stable substance, which is sintered from inorganic silicate; Glass is easy to clean and very safe; But the glass thermos cup has a disadvantage that it is easy to break, so it is inconvenient to carry it with you.
5. Plastic: Plastic thermos cups only have the function of heat insulation. Compared with other thermos cups, the heat insulation effect is far from perfect. Although it can be insulated, the insulation time is short and the heat dissipation is fast, which is not suitable for autumn and winter.