Cup material

Enamel drinking glass is also a good choice. Enamel is a kind of composite material in which inorganic glass material is melted and solidified on metal through thousands of degrees. Enamel coating on the metal surface can prevent rust, so that when the metal is heated, it will not form an oxide layer on the surface and can resist the erosion of various liquids. Enamel products do not contain harmful substances such as lead, are easy to carry and clean, and are widely used as eating utensils and washing utensils used in daily life.

The enamel cup has a disadvantage. The enamel cup is afraid of knocking and the surface is prone to damage. Some studies have shown that the damaged enamel cups are prone to release harmful substances when holding beverages, and should be decisively eliminated.