Three-piece cans and ends have a variety of lacquers and enamels applied before manufacturing which protect the contents and ensure a long shelf life.

• 1 拉环式易开盖的开启原理及分类拉环式易开盖简称拉开式罐 盖，这种类型的盖开启方便，开启时只要拉拉其上的瓣环，稍用力撕拉即可开启罐盖。