Introduction: The 'Freeze' and 'Motion' of Service Vehicle Procurement—from Yinchuan to Northwest China. In Yinchuan and across the broader Northwest region, winter temperatures frequently plummet to -15°C to -20°C—posing a severe challenge for municipal sanitation and emergency response service vehicles. In early 2025, a municipal sanitation department in Yinchuan issued a procurement tender for service vehicles, specifying the Ford New Generation V348 as the target model. The tender explicitly required vehicles to feature outstanding cold-start performance, low-temperature hydraulic system stability, and a comprehensive winter maintenance plan. This was not merely a routine vehicle purchase, but rather a rigorous 'low-temperature test' of suppliers’ technical capabilities and after-sales support. Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as 'Chengli') secured the contract and delivered the vehicles, leveraging its robust official vehicle announcement credentials and tailored technical solutions. This article uses this case as a starting point to delve deeply into a critical step in government procurement—the verification of official vehicle announcements—helping procurement entities and industry professionals avoid risks associated with fraudulent or invalid announcements. I. Announcement Verification: The 'First Security Check' in Government Procurement In government procurement, the official vehicle announcement is the fundamental basis for legal road operation, registration, and annual inspection/commercial operation. Many procurement entities overlook announcement verification, only to encounter embarrassing situations when vehicles are needed—such as inability to register license plates, classification as illegal modifications, or even legal disputes. According to the Ministry of Industry and Information Technology (MIIT) 'Announcement on Road Motor Vehicle Manufacturers and Products', each special-purpose vehicle must possess a unique model number and corresponding announced technical parameters. The Ford New Generation V348 service vehicles delivered by Chengli were modified based on the Ford Transit V348 chassis, with the official announcement model number CLW5040XDWJ6 (as referenced in publicly available tender documents). This model was listed in MIIT’s 358th Announcement, with key parameters—including overall dimensions, wheelbase, engine power, and emission standard (China VI)—fully aligned with those of the original chassis, ensuring nationwide registration eligibility. Announcement Verification Steps (using Chengli CLW5040XDWJ6 as an example): • Visit the MIIT official website: Access the 'Road Motor Vehicle Manufacturer and Product Information Inquiry System'. • Enter the announcement number: Input 'CLW5040XDWJ6' in the model field; the system will display complete technical specifications, including chassis model (Jiangling Transit JX6491T-L6), engine model (Jiangling DURATORQ4D226H), maximum power (103 kW), and emission standard (China VI). • Cross-check critical parameters: Compare actual vehicle data against announced parameters, focusing on wheelbase (2,933 mm), gross vehicle weight (3,510 kg), and rated payload (1,000 kg). • Inspect modification components: Service vehicles typically involve interior equipment modifications; verify that post-modification vehicles still comply with announcement requirements and have not altered fundamental structural parameters (e.g., wheelbase or overall external dimensions). Warning from Fraudulent Announcement Case: In 2023, a procurement entity in Northwest China purchased a batch of 'service vehicles' through non-standard channels, which were claimed to be built on the Ford New Generation chassis. However, their official announcement corresponded to an outdated model, resulting in failure to meet current emission standards and subsequent inability to register the vehicles. Ultimately, the procurement entity incurred losses of approximatel