Vintage Pure Copper Mug,With Lid Milk Breakfast Coffee Cup,Handcrafted Woven Handle Hammer Texture Home 400ml Tea Cup

Commodity Description Material: Copper Style: Retro Product Name: Mug Packing: Carton Weight: 350g Capacity: 400ml Usage Scenario:Restaurant Home Package List: 1*Copper Mug Focus on the quality of life and make art live. Notes for Attention Matters needing attention Why does copper turn black? How to clean blackened oxidized copper? Because copper ions are extremely unstable. So copper is easily oxidized (blackened) and produces patina (green or blue powder). The purest copper oxidation blackening faster, copper oxide is non-toxic, does not affect the use and function, if the copper occurs oxidation blackening. You don't need to worry, you can soak it with vinegar and salt, and then wipe it with a steel ball and detergent to regain a bright luster. If you do not maintain properly or do not use patina for a long time. It is recommended that you sand the patina off, so that it can be used normally.