Color of tin box

Metallic tin and silver have the same color, and different purities of tin present slightly different colors after polishing. After polishing, tin vessels with a content of 97% may not be bright, but they are considered dark and bright; Tin vessels with a content of 99.9% will show a bright silver color after polishing. Moreover, after the tin box is oxidized by moisture, an extremely thin oxide film will be formed on the surface, which will present different colors such as yellow brown, purple gray, purple black, silver gray, and black brown due to the different content of other metals in different tin materials.

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