Tin is an ancient precious metal whose value is only inferior to platinum, gold and silver Tin box has the effect of strong airtightness, sterilization, non-toxic, purification, luster and freshness preservation. For tea storage in tin box, it can resist oxidation, high temperature, moisture, light and odor. Tin box are "drier and denser", which can easily keep the color, fragrance and taste of tea for a long time.