Copper Cup Handmade Pure Copper Tea Cup Goblet Copper Thickened Handmade Water Wine Cups Coffee Cup Set
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Manufacture Country: China Label: Yes Washing Care: Hand washable Condition: new Reusability : Reusable Care instructions : Hand Wash Only Material types not included : BPA,Cadmium,Lead ,,Disposable EU,FCM,CIQ,EEC,LFGB Model Number : K666 Material : Metal Quantity : 1 pcs Type : Teacups Drinkware Type : Cups Saucers We are Manufacturer,welcome to make the order,we sure ship all on the day you make the order. Causes of copper oxidation Why does copper turn black How to clean blackened and oxidized copper ware Because copper ions are very unstable. So it's easy for copper to oxidize (blacken) and green (green or blue powder). The purer the copper, the faster the oxidation blackening. Copper oxide is non-toxic and does not affect the use
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