[EVERYTHING] How To Avoid Odor & Rust Problems Of Stainless Steel Drinking Cups 1. Root Causes of Strange Odors in Stainless Steel CupsStainless steel itself is odorless. All peculiar smells come from external residues and improper use habits:Beverage residue: Coffee, tea, milk, fruit juice stay in the cup or silicone lid gap, ferment and breed bacteria to produce sour & moldy
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