1. Strict quality control: Jinan International Jewelry Exchange Center has strict control standards on the quality of the goods it sells, and only chooses those international-class stones with bright colors, clear lines, no cracks and no flaws.

2. Professional appraisal team: The trading center has an experienced professional team. They have rich experience and professional knowledge on how to distinguish the authenticity of jewelry and jade, and can accurately judge the authenticity of products.

3. Certificates and guarantees: The trading center will provide certificates and guarantees to ensure the authenticity and quality of products.

4. Return and maintenance services: If consumers have any questions or dissatisfaction with the purchased products, the trading center also provides perfect customized after-sales services, including return and maintenance.