Tin cans is an ancient handicraft that can be traced back to 2700 B.C., and there are records of tin cans related to tin cans all over the world: Tin bracelets and tin "Pilgrim bottles" found in the pyramids of the 18th dynasty (1580-1350 B.C.) are the oldest known tin products in the world; in the Japanese court, carefully brewed Royal wines are made of tin cans. In ancient China, people knew how to put tin plates on the bottom of the well to purify the water quality, and the Imperial Palace also used tin cans to hold royal beer. tin cans can be widely used and loved by people because of some excellent characteristics of tin material itself. First of all, tin is harmless to human body. The tea tin box made of tin has stronger sealing than others because of its own material. Moreover, because of tinplate thick body, high neck, constant temperature, it has better fresh-keeping function.

At present, the quality of tin cans in the market is mixed, so you can choose the following methods when you select tin tea cans:
1. First, listen to the sound. Pure tin material has good ductility. It is called "ringing tin" because of its distortion and sound. This method can't be used when buying crafts because they will change shape after being twisted, but we can use a simpler method to "smell the sound": use fingernails to gently sweep through the tin cans from the palm of your hand, 97% of the tin cans has a clear metal sound and a short echo; 99.9% of the tin cans has neither crisp nor echo, which is a superior tin cans.
2. Then look at its "color". Pure tin, color as silver, bright as a mirror! Although the tin cans containing 97% of the tin cans is bright but not white, it is dark and bright; the tin cans containing 99.9% of the tin cans is silver and bright after polishing, which is superior tin cans and looks like silver cans.
3. Third, distinguish its "quality". Quality refers to the purity of tin utensils. The higher the purity of tin utensils, the more durable they will be. Food packaging is not only harmless, but also can keep fresh for a long time. Low purity tin utensils are easy to deteriorate and not durable enough.
4. After the reward of "craft". Craft refers to the technology of tin cans. The technology of tin cans is mostly determined by its purity. 97% or less of tin cans is hard and suitable for machining. The processed tin cans is often integrated with obvious relief effect, but its sealing is not the best. Therefore, the tea tin is generally designed with two layers of inside and outside.
99.9% of the tin cans are soft in texture and strong in manual features. One piece of work is mostly composed of several parts, which can show the advanced carving and hollowing process. The high-purity tin has good sealing performance. Only one outer cover is needed for the tea tin to achieve the effect. You can often find that the hard cover will bounce back, which is the reason. Through these four methods, consumers can use for reference when choosing tin tea cans to select good products!