CGC； , the national registered jewelry and jade quality inspector; CPVG, a national registered jeweler and jade appraiser; Appraiser GAC, President of China Jewelry and Jade Jewelry Industry Association; NGTC, appraiser of National Jewelry Training Center.

Famous jewelry experts in Beijing have worked in the jewelry appraisal field for many years, and have accumulated rich practical experience, combined with the rich theoretical knowledge of Peking University Ground and Air Institute. Mr. He Zhihong is a guest expert of Beijing TV Financial Channel, Life Channel and CCTV. He has his own unique views on jewelry appreciation. There are many articles in the field of organic gemstones in colored gems.