Note: SE999 is not a symbol of silver, but a mark on steel products. Similar to stainless steel, alloy steel and other metal products, in the production process, in order to manage production and quality control, products are usually marked, carved or stamped. SE999 is widely used in product after-sale traceability and safety traceability through radio frequency identification technology, which can improve management efficiency and market visibility for enterprises, and also improve product quality and service level.

Extension: The silver bracelet is a traditional ornament, which has been used in the ancient history of China. Silver bracelets are generally divided into pure silver bracelets, silver alloy bracelets and inlaid silver bracelets. The progress of modern manufacturing technology and consumers' higher requirements for quality and safety make the production and quality control of silver bracelets more strict and standardized. When consumers buy silver bracelets, they can choose products that meet their own needs according to the product identification and the composition and weight of silver.