It's true. According to official website, the jewelry of China National Mining Corporation. Guangzhou CNMC Jewelry Appraisal Center (NFTC) is a legally authorized jewelry and jade quality inspection institution. It has passed the qualification certification and laboratory approval of national product quality supervision and inspection institutions, and is a domestic jewelry and jade inspection institution. Therefore, Guangdong CNMC Jewelry Appraisal Co., Ltd. is true.