On November 15, 2023, the Suzhou branch of the National Jewelry and Jade Quality Supervision and Inspection Center Laboratory Co., Ltd. ordered a jewelry and jade density meter from Dahongmeituo for testing. Dahongmeituo has recently completed the delivery.

The National Jewelry and Jade Quality Supervision and Inspection Center Laboratory Co., Ltd. Suzhou Branch was established on March 4, 2020, with its registered address at 4th Floor, No. 5 Nanshipi Lane, Gusu District, Suzhou City. The legal representative is Zhang Yong. The business scope includes licensed projects: inspection and testing services (projects that require approval by law can only be carried out after approval by relevant departments, and specific business projects are subject to the approval results). General projects: information consulting services (excluding licensed information consulting services) (except for projects that require approval by law, business activities can be carried out independently based on the business license in accordance with the law)