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Disease analysis: Hello, silver bracelet worn black wrist One of the important factors is silver ions and sulfide ions have a great affinity, prone to chemical reactions, the reaction results in the silver surface silver sulfide, because the sulfide Silver is gray-black, so with the increase of silver sulfide, silver surface color gradually from white to yellow and finally turned black. This chemical change can occur in very small quantities, as long as silver encounters several trillions to several replica van cleef bracelet red trillionths of hydrogen sulfide or sulfur replica van cleef perlee clover bracelet ions in the air. Human sweat also contains sulfur, which discolors silver when it comes into contact with silver articles, especially the astonishing hydrogen sulfide generated from copy van cleef baby bracelet the discharge of sewage and rubbish in urban air, so it is not surprising that silver discolors. Guidance: silver cleaning methods: 1, with professional silver cloth, silver (in addition to the platinum plating process) to wipe the surface. : 2, professional silver water, can be soaked (outside the old process) or wipe method (except Platinum plating process and mosaic process), the silver jewelry into the silver wash water for about three minutes (oxidation can be particularly serious Put it aside for a long time), remove and rub it repeatedly, scour it with plenty of water, put it into the alkaline sleep (for example, washing powder water), and wash the lakes with the rinse water. 3, with toothpaste (try to use a green transparent gel shape, which toothpaste particles delicate to avoid scratching the surface of silverware) to wipe the toothpaste directly on the silverware, add a little water after that, foiled foam, if there is a seam of the place Brush with a toothbrush to avoid foam into the seam;
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