Possible causes: Mineral deposits from hard water or water left on the surface too long.
Solutions: 1) Light water stains: Use a neutral detergent + cotton cloth to wipe. 2) Stubborn water spots: Use stainless steel cleaner or water wax with a scouring pad to clean. 3) Daily care: Wipe dry promptly after use, and regularly use citric acid or white vinegar to soften the water.

1) Daily care: Avoid soaking it in strong acidic or alkaline substances (e.g., lemon juice or bleach) for long periods, and wipe the surface dry after cleaning.
2) Purchasing suggestions: Opt for R10 rounded corners (to reduce dead spots for cleaning), manual welding process (more durable), and thickness between 0.8 mm and 1.2 mm.
If the problem remains unresolved, contact FAENZA's after-sales service or professional technicians to avoid damage caused by self-repair.