Copper tableware basically includes brass and red copper. Brass has higher hardness and lower price than red copper, which is pure copper, while brass is an alloy of copper and other metals. Brass is a compound of copper and tin. It is harder than red copper. After polishing, it can give out a luster like gold. It is not easy to rust. So it was used to make rice cookers, water cookers and faucets. It can also be oxidized to produce green oxide, which we call copper green. Copper oxide is toxic and cannot be eaten. But like iron, aluminum and magnesium, it is also a trace element needed by the human body. Few people exposed to it have allergy.
Benefits of copper to human body: 1. Copper exists in the form of copper protein in the body. Copper ion has the functions of hemopoiesis, softening blood vessels, promoting cell growth, strengthening bones, accelerating metabolism, and strengthening defense function. 2. The human body needs to ingest about 1.3mg of copper every day. 3. Slightly high copper has little impact on human body, because the liver of healthy people excretes copper energy very strongly. Relevant experts have found that lack of copper in human body is one of the main reasons for hair whitening. Therefore, experts suggest that in addition to eating more copper-rich foods such as animal liver, shellfish, edible fungi, nuts, apricots, oats, etc., we should also consciously use more copper utensils to prevent early birth of white hair.