[Building Materials Network] How to choose sanitary ware? 1. How to choose the faucet? Generally speaking, faucets are made of cast iron, plastic, zinc alloy, copper alloy and stainless steel. Cast iron is easy to rust, plastic is easy to age, zinc alloy has poor stability and is easy to burst, resulting in short service life. It is not recommended to buy faucets made of these three materials. Therefore, when purchasing, it must be recognized that