The advantage of stainless steel cups is that they are durable, rust and corrosion resistant. However, stainless steel cups are alloy products and contain a lot of heavy metal substances, such as nickel, chromium, manganese, etc. If used improperly, these heavy metal substances will be easily released and endanger health. Therefore, in daily use, be careful not to use stainless steel cups for acidic drinks, such as juice, coffee, carbonated drinks, etc.; also do not store soy sauce, vinegar, vegetable soup, tea, etc. for a long time, because the electrolytes in these foods may be mixed with The heavy metal substances in stainless steel undergo chemical reactions, resulting in the precipitation of heavy metal substances. When washing stainless steel cups, do not use strong alkaline or strong oxidizing chemicals such as soda, bleaching powder, etc. These substances are also prone to chemical reactions with stainless steel.