1. Strict quality control: Mengjinyuan has strict quality control over the purchase, processing and sales of gold to ensure the purity of the gold sold.

2. Authoritative certification: The gold products of Mengjinyuan are usually tested and certified by authoritative organizations, such as the National Gold and Silver Products Quality Supervision and Inspection Center, to provide quality assurance for consumers.

3. Brand reputation: As a well-known jewelry brand in China, Mengjinyuan has won the trust of consumers for a long time with high quality and pure gold products.