In 2025, the Urban Management Bureau of a district in Huizhou City planned to procure a blue-license-plate sewage treatment vehicle for rapid cleaning and transportation of septic tank sludge in old residential communities and sediment in municipal pipelines, while also supporting emergency drainage tasks. The project budget was approximately RMB 315,000, requiring the vehicle to comply with China VI emission standards, qualify for a blue license plate (drivable with Class C driver’s license), and possess a valid MIIT announcement to ensure nationwide registration without restrictions. After multiple rounds of technical proposal comparison and official announcement verification, the Dongfeng D6-based blue-license-plate sewage treatment vehicle supplied by Hubei Chengli Special Purpose Vehicle Co., Ltd. was ultimately selected. This article analyzes this case in depth, focusing on key steps, common pitfalls, and Chengli’s compliant solutions in government procurement announcement verification. I. Announcement Verification: The 'First Firewall' of Procurement In special-purpose vehicle procurement, announcement verification is the cornerstone for ensuring legal road operation and smooth registration. Many procurement entities overlook this step, resulting in vehicles being denied license plates and causing significant financial losses. Standard Steps for MIIT Announcement Query: Step 1: Visit the MIIT Official Website Log in to the Equipment Industry Development Center of the Ministry of Industry and Information Technology — Road Motor Vehicle Manufacturers and Products Information Query System. URL: http://app.miit.gov.cn (or via the 'MIIT Weibao' mini-program). Step 2: Enter Key Information In the 'Product Model' field, input a representative announcement number—for example, CLW5070GSSD6 (a water-sprinkling vehicle model from Chengli, used here to illustrate the query logic). For sewage treatment vehicles, select the 'Special-Purpose Vehicles' category and search using keywords such as 'sewage treatment vehicle' or 'vacuum suction vehicle', combined with the chassis model (e.g., Dongfeng D6) for filtering. Step 3: Verify Core Parameters Key items to compare include: - Vehicle Name: Must explicitly state 'Sewage Treatment Vehicle' or 'Vacuum Suction Vehicle'. - Chassis Model: e.g., Dongfeng D6 (typically corresponding to models such as EQ1075SJ3CDF). - Emission Standard: China VI (GB 18352.6–2016). - Gross Vehicle Weight / Curb Weight: Blue-plate vehicles must have gross weight ≤ 4,495 kg; curb weight must meet payload requirements. - Overall Dimensions: Length ≤ 5,995 mm, width ≤ 2,200 mm, height ≤ 2,800 mm (blue-plate standard). Step 4: Confirm Validity Period and Announcement Batch The announcement must be within its validity period (typically 2–3 years), and the batch must not have been revoked. Refer to the latest batch of the 'Announcement of Road Motor Vehicle Manufacturers and Products'. II. Fraudulent Announcement Cases: 'Hidden Reefs' in Procurement The following is a real-world cautionary case: A municipal sanitation department in southern China procured a batch of 'blue-license-plate vacuum suction vehicles'. The supplier claimed the vehicles had valid announcements, but during registration, the traffic management bureau discovered: - The actual chassis model did not match the announced model (chassis VIN numbers were inconsistent); - Overall vehicle dimensions exceeded blue-plate limits (length: 6.2 m, exceeding the limit by 0.3 m); - The announcement had expired, and the listed vehicle type was 'tank-type cargo transport vehicle', not 'vacuum suction vehicle'. Ultimately, these vehicles were rejected for registration; the supplier disappeared, and the procurement entity incurred losses exceeding RMB 1 million. Such cases underscore that announcement verification must never rely on verbal assurances—it requires direct, independent verification via the official MIIT system. III. Cheng