What does au9999 mean “Au9999”, is a method of expressing the purity of gold stipulated by the state. Gold jewelry must bear this kind of mark. “ออสเตรเลีย” is the symbol of gold’s chemical element. It shows that this metal ornament is made of gold. “9999” indicates the purity of gold (เช่น “เนื้อหาทองคำ”), ที่ […]
