Ingredients: 925 sterling silver, 18K plating surface Production Method: First draw a hand-painted picture, and then email the figure to the master of the workshop. They will make a computer stereogram according to the plan, and then the computer will produce wax patterns. In response to the request of different guests; he will make changes in the wax model; finally take silver. Maintenance methods: Sterling silver will oxidize and turn black or yellow; after cleaning, you can use silver wash water or silver cloth to clean the surface of the ring; however, store it in a box or plastic bag to reduce its surface area in contact with air. To reduce the rate of oxidation.