The plastic dome lid is made from BOPS material,so the plastic dome possesses the features of innoxious,flavourless,light-weight,high transparency,high rigidity and high glossines.The BOPS product can contact with food.It measures up the American FDA standard and the European 90/128/EEC standard. The BOPS is called the environment-friendly material, and has been assigned as one of recyclable environmental conservation product by State Environmental Protection Administration.