1.304 stainless steel insulated cup

Food-grade stainless steel material, with good thermal conductivity, and excellent corrosion resistance and high-temperature resistance. During daily use, it can be used to hold warm water and boiling water, but it is not recommended to hold acidic beverages such as juice, carbonated drinks, coffee, etc. Generally, there are marks like SUS304, S304XX, 304, 18/8 on the bottle mouth or inner container. It is a metal material, and there will be a certain metallic taste when ingested.

2.316 stainless steel insulated cup

Compared with 304 stainless steel, 316 stainless steel contains a higher amount of molybdenum, which gives it better corrosion resistance and high-temperature resistance. Additionally, 316 stainless steel has excellent welding and processing properties. Generally, there will be marks such as "SUS316" or "S316XX" on the bottle mouth or inner liner. The metal material will have a certain metallic taste when ingested.

3.ceramic coating

Ceramic coating is a process of covering the metal surface with organic coatings or Teflon coatings. However, it is not truly a ceramic material. The coating is thin and has poor wear resistance. There is a risk of the coating peeling off after long-term use. Once it peels off, it may be ingested along with liquids and pose a threat to human health.

4.ceramic inner liner

Ceramics are made by firing in one piece. They do not contain any metal components. Ceramics are a natural organic material that does not contain harmful substances to the human body. After being fired at high temperatures, the surface of the ceramics is smooth and easy to clean, and it is not prone to bacterial growth. Therefore, drinking water from a ceramic inner container cup has a very good protective effect on human health. The ceramic inner container has strong corrosion resistance and is not easily corroded by acids and alkalis, so it has a longer service life and is suitable for holding various liquids.