Well-known domestic brands have their own processing plants, which can't meet the demand. There are OEM factories, such as China Gold, Old Temple and Old Fengxiang. YF is the manufacturer's code name. Although it is an OEM, the quality is absolutely reliable, which is 100 times stronger than those miscellaneous brands. In order to control the quality, China Gold signed an agreement with the National Jewelry Quality Supervision and Inspection Center. Every product has been inspected by China Gold Company to ensure the quality. After passing the inspection, it is unique in the domestic jewelry industry to print labels for jewelry. Therefore, the quality of gold ornaments in China is absolutely reliable.