Precious metals will have a natural oxide layer on their surfaces over time, so it is recommended to clean them regularly. Many people may prefer the newly polished surfaces. If this happens, please give your platinum jewelry to a qualified jeweler and let them re-polish it to produce an extremely bright effect. Now many jewelers have detailed after-sales service, free cleaning and renovation. Chaohongji Jewelry also has this service. Last year's wedding jewelry was bought in their home, and the clerk's service was also very good!