https://www.hizy.net/archives/is-it-poisoned-to-make-tea-in-a-thermos-cup-and-pack-soya-bean-milk-there-are-three-classic-misunderstandings-about-stainless-steel/
Is it poisoned to make tea in a thermos cup and pack soya-bean milk? There are three classic misunderstandings about stainless steel.