Dalian Hengxin Jewelry Appraisal Co., Ltd. was approved and registered by Dalian Industrial and Commercial Bureau in 2003, and passed the national metrological certification. Is a professional organization established in accordance with the law as an impartial third party to conduct jewelry quality inspection. The company has independent legal personality, legal approval documents, independent organizational system, and legal rights and obligations suitable for its testing business. The company has fixed office space and laboratory, and there are more than a dozen main testing equipment and instruments in the laboratory, all of which are the most advanced equipment in the jewelry industry at present, with fixed assets of more than 300,000 yuan. Five professional technicians. College degree or above, senior engineer 1, 3 engineers. They have obtained the National Registration Certificate of Jewelry and Jade Quality Inspector (CGC), NGTC Gem Appraisal Certificate, Diamond Classification Certificate and NGTC Jewellery Appraisal Certificate, the Jewellery Appraiser Certificate issued by American Appraisers Association (ASA), and the International Senior Jewellery Appraiser Certificate jointly issued by China Assets Appraisal Association and National Jewellery Quality Supervision and Inspection Center. The company's main business is all kinds of entrusted inspection, quality appraisal, arbitration inspection, evaluation, on-site consultation and inspection of jewelry and precious metal jewelry, as well as skills training of jewelry sales personnel, with all standards related to inspection and a quality management system. With strong technical force, advanced instruments and equipment, scientific detection methods and first-class service quality, the company is the most trusted testing, evaluation and consulting service organization for customers and consumers. Tel: 4622 1 18. The price depends on the situation. I hope I can help you.