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Is titanium alloy or stainless steel better for thermos?
That must be titanium. Very good! Stainless steel can precipitate heavy metals and has poor corrosion resistance, so it can't be used for making tea or filling acidic drinks.

Generally, thermos cups are made of pure titanium. Compared with stainless steel, pure titanium is much lighter in weight and has the following advantages:

Titanium thermos cup can naturally inhibit bacteria, and the titanium dioxide produced on the surface makes it difficult for bacteria to survive, thus achieving the effect of preservation. One of our colleagues put coffee in a titanium cup and tried it a week later. The taste didn't change!

Titanium is the only metal that can hold traditional Chinese medicine, and its surface will not be corroded, and there will be no heavy metal precipitation. Can hold all kinds of drinks to ensure the original flavor of the drinks!

Titanium cups are resistant to high temperature and are often used in aerospace metals, with excellent toughness.