1, stainless steel. Stainless steel thermos cup is not easy to produce corrosion, pitting and corrosion, and is wear-resistant and durable; Nowadays, it has become a new trend of using cups in modern families. The stainless steel thermos cup is gorgeous, bright, fashionable and durable, which adds design color to our plain life. And has the characteristics of firmness, tight combination and being difficult to be destroyed; Stainless steel thermos cups are generally made of food-grade 304 stainless steel, with chromium content of 16%, good stability, strong corrosion resistance, no rust after long-term use, and the function of insulating ice water besides hot water.

2. ceramics. Vacuum cups are not very common in the insulation industry, and the price will be several times more expensive than other materials. The price of a good porcelain 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, the inner container of some brand products of front-end thermos cups is made of authentic pure natural purple clay (less output), and the outer layer is made of stainless steel, 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.