The main material commonly used for faucets is divided into three types: brass, stainless steel and zinc alloy. Brass material: diverse in shape and beautiful in style, it is best to choose H59 copper faucet, such copper content is 57% to 60%, lead content is less than 1.9, no metal exceeding the standard, harmless to the human body. It is not recommended to use 53 copper and 55 copper, which belong to the secondary recycling of copper. Stainless steel: SUS304 stainless steel does not contain lead and is harmless to the human body. It is forbidden to choose inferior stainless steel, 201 stainless steel has the phenomenon of manganese exceeding the standard. Zinc alloy material: The advantage of zinc alloy material is that the price is low, but it is easy to rot in contact with water, and it is easy to cause the content of harmful substances to exceed the standard after rot. Long-term use is