Handcrafted Pure Copper Coffee Mug,400 Ml Breakfast Cup,Portable Smooth Surface Woven Handle Home Drinking Beer Cup Tableware

Manufacture Country: China Label: Yes Washing Care: Hand washable Condition: new

Type : Coffee Cups Material : Copper Material : Copper Style : Retro Product Name : Coffee Cup Packing : Carton Weight : 170g Capacity : 400ml Usage Scenario : Restaurant Home Commodity Description Material: Copper Style: Retro Product Name: Coffee Cup Packing: Carton Weight: 170g Capacity: 400ml Usage Scenario:Restaurant Home Package List: 1*Copper Coffee Milk Cup 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.