Zhongwei Jewelry and Jade Quality Inspection Center has passed the national product quality supervision and inspection agency qualification certification (metrological certification) and ISO/IEC 17025 laboratory accreditation. It is a legally authorized jewelry and jade quality inspection institution, and the appraisal result is certified by a certificate issued by an authoritative organization.

And has modern instruments and equipment, including infrared spectrometer, X-ray fluorescence precious metal detector, optical fiber spectrometer, diamond observation instrument, ultraviolet-visible spectrophotometer and other advanced equipment, which can comprehensively and accurately detect the quality of jewelry and jade. Therefore, it is reliable.