Rusty cups are caused by chemical reactions between electrolytes in food and heavy metals in stainless steel, which can cause heavy metals to be precipitated and are harmful to the body.

Stainless steel cups are alloy products. Improper use will release the heavy metal substances contained in them, which is harmful to health. In daily use, it is not a big problem to use a stainless steel cup to hold ordinary water, but do not hold acidic drinks, such as juice, coffee, carbonated drinks, etc., as this will easily precipitate heavy metal substances, making it unsafe even if it is used to drink ordinary water.

Extended information

There are two important factors that cause stainless steel corrosion: external factors and human factors. We cannot stop the influence of nature, we can only maintain stainless steel products. If there is dust on the surface and the dirt is easy to remove, you can wash it with soap, weak detergent or warm water. Use warm water and weak detergent to wash the trademarks and films on the stainless steel surface. Use alcohol or organic solvent (ether, benzene) to scrub the adhesive component.

Wipe clean with a soft cloth to avoid grease, oil, and lubricating oil contamination on the stainless steel surface. Later, clean with neutral detergent or ammonia solution or special detergent. With this positive attitude, this so-called stainless steel rust problem will be greatly reduced.

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