Titanium has bacteriostatic effect. In microbiology, food will deteriorate due to the spread of bacteria, but titanium has antibacterial function, so it has the ability to keep fresh.
As an inert metal, titanium will not react with others below 1000 degrees, so it can drink tea, milk, drinks and so on.
Generally, a single-layer titanium cup is definitely hot, while a double-layer titanium cup is not. Double titanium cups can be divided into vacuum and non-vacuum. The thermos cup has heat preservation function, and its heat preservation capacity is about 24 hours that of stainless steel. Non-vacuum titanium cup has no heat preservation function, but it does.
Titanium cups are mainly popular in Japan, but they are rare in the domestic market. When I was shopping, I saw a brand "Flying Sword" and bought a sports thermal insulation titanium cup, which looked good. This brand of vacuum technology is quite good.