Tea leaves deteriorate when exposed to air, so the first key to storing tea is to seal it. The iron box has low oxygen transmittance and good barrier to air, which can better protect the tea.
2. Reducibility of iron box.
Chemical action of the iron box: Good reducibility, tin in the iron box will be filled with the remaining oxygen in the container, this is the reduction of tin. Tin reduction can reduce the chance of oxidation of nutrients in tea and prolong the storage life of tea.
3. Lightlessness of the iron box
Light is easy to cause the deterioration reaction of tea and the change of food quality, especially green tea is easy to deteriorate in the presence of light. The opaque iron box makes the preservation rate of tea higher, in addition to keeping the original taste of tea, even the color will not change.