My stainless steel tile trim has been found to be a little rusty recently. Is it a quality problem?

Stainless steel tile trim can actually rust, depending on whether they are affected by the environment or foreign objects. Long-term storage in a damp place will also rust, it is recommended to keep it in a dry place. Or it will rust if it is contaminated by certain pollutants. Unless it is a large area, large area of rust, this is considered a quality problem.