In the profile of Du Yu Huangfei Jewelry Store official website, the company has been certified by the administrative department for industry and commerce, and has a formal business qualification certificate, and the jewelry has a special appraisal certificate, so the jewelry sold in this store is true.

The authenticity of jewelry products, in the purchase process, requires the seller to sell a special warranty appraisal certificate, and have a specific ticket purchase voucher and receipt, which will continue to be retained as a necessary voucher for jewelry appraisal.