?????CUAFUFU?????★★★★CRAFTMANSHIP★★★★German Mirror Polishing Technology. Rough, Fine and Mirror, Three Hand Polishing Processes. All were done by professional Artisans with over 10 year experiences. Microscopic Hand-Inlaid by Professional Artisans. 18 Manufacturing Processes, 9 QC Inspection Processes and 3 High-tech Product Testing Processes. ★★★★Jewelry Maintenance★★★★Our Jewelry are made of Genuine high-grade Material, as long as the proper maintenance, ensure wearing years still bright as new. ❀ Please avoid contacting with the acid and alkali, corrosive substances. ❀ Please avoid the collision, so as to avoid surface scratches. ❀ Please avoid Perfume, Body Lotion, Hairspray or any other Chemical that May Harm the shine of the metal. ❀ Please avoid wearing it when sweating a lot, shower or sleep, etc. ❀ Please wipe surface clean by soft cloth everyday and put into the box would be better. ❀ Some people apply a polymer coating to their rings to act as a barrier between their skin and the metal of the ring.