The Market Supervision Administration in Mudanjiang City, Heilongjiang Province, has intensified its management of cold-chain medical supplies by targeting key areas such as refrigeration storage facilities and laboratory testing departments. The initiative involves conducting risk assessments of refrigerated medical devices, including in-vitro diagnostic reagents, across the city's medical institutions to ensure quality and safety during usage. During inspections, officials thoroughly examined the operational status of refrigeration equipment, with a particular focus on verifying the accuracy of temperature and humidity monitoring systems and the completeness of historical data logs. This ensures the stable operation of cold-chain equipment and uninterrupted temperature control throughout the storage process. Inspectors randomly selected diagnostic reagent products to trace their procurement qualifications, supplier documentation, and acceptance procedures upon arrival, strictly verifying the consistency of invoices, records, and physical goods to guarantee temperature control throughout the product lifecycle. On-site guidance was provided to emphasize proper storage practices for products within their validity period and those that have been opened, including labeling requirements and usage timelines, to standardize operational details. Additionally, officials assessed the practical application of the Unique Device Identification (UDI) system in medical settings and urged relevant institutions to strictly implement their primary responsibilities. The inspection covered 34 medical institutions, identifying issues such as incomplete temperature and humidity records and unlabeled opening dates on products. All identified problems have been mandated for correction, with one case leading to legal proceedings. Moving forward, the Mudanjiang Market Supervision Administration will further strengthen safety supervision of medical device distribution and usage, enhance verification of product traceability systems, and increase oversight and sampling inspections of high-risk products to safeguard public safety in medical device usage.