Government procurement case of Dongfeng Yizhan-style sewage treatment vehicles in Shijiazhuang: Interpretation of vehicle acceptance standards and procedures. By the end of 2025, a municipal sanitation department in Shijiazhuang procured a batch of Dongfeng Yizhan-style sewage treatment vehicles via public tender for emergency urban sewer network maintenance and river remediation. The vehicles were delivered by Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as 'Chengli'), with a unit price of approximately RMB 280,000–350,000 (per publicly available tender information), totaling five units. The procuring entity’s primary concerns centered on freeze-resistant cold-start performance under winter low temperatures, hydraulic system stability, and long-term maintenance plans. This article uses this case as a reference to detail the 10 mandatory inspection items during vehicle acceptance, methods for verifying MIIT (Ministry of Industry and Information Technology) technical parameters, Chengli’s delivery process assurance measures, and frequently asked questions (FAQs). I. Ten Mandatory Inspection Items Upon Vehicle Acceptance Prior to formal vehicle acceptance, the procuring entity must verify each of the following ten critical items to ensure compliance with technical specifications and contractual requirements: 1. Vehicle Exterior and Identification: Inspect the cab and fold-out wing-body for scratches or deformation; confirm completeness of the 'Sewage Treatment Vehicle' labeling and reflective warning strips. 2. Chassis Model Verification: Confirm the chassis is a Dongfeng brand (e.g., EQ1075 or EQ1185 series), and cross-check the vehicle identification number (VIN) and engine number against the Certificate of Conformity. 3. Engine and Emission Standard: All units comply with China VI emission standards; verify the engine nameplate and environmental protection list to ensure eligibility for local registration in Shijiazhuang. 4. Sewage Tank Sealing Performance: Conduct a water-filling test to inspect weld seams, manhole covers, and discharge valves for leakage. Chengli employs automated welding processes, typically ensuring leak-free integrity. 5. Hydraulic System Testing: Start the hydraulic pump and repeatedly operate the wing-body doors and sewage lifting mechanism; verify smooth, silent operation and normal oil temperature. 6. Freeze-Protection Equipment Inspection: Specifically verify coolant freezing point (≤ −25°C), hydraulic oil grade (L-HV32 low-temperature hydraulic oil for winter use), and functionality of the fuel preheating system. 7. Electrical and Control Systems: Test dashboard control panels, warning lights, rear-view camera, GPS positioning system, and other electrical components for proper operation. 8. Onboard Accessories and Tools: Verify completeness of the tool kit, fire extinguisher, triangular warning sign, spare tire, and jack. 9. Driving and Braking Performance: Conduct a ~2-km road test to assess steering responsiveness and braking distance (≤ 9 meters when decelerating from 30 km/h under unloaded conditions). 10. Documentation Completeness: Must include the Motor Vehicle Whole-Vehicle Certificate of Conformity, Chassis Certificate of Conformity, Environmental Protection List, Certificate of Consistency, official invoice, and warranty manual. II. Methodology for Verifying MIIT Technical Parameters The procuring entity shall consult the complete technical parameters of the vehicle model via the Ministry of Industry and Information Technology’s (MIIT) 'Road Motor Vehicle Manufacturers and Products Announcement'. Taking Chengli’s model CLW5070GSSD6 (Dongfeng Dolika-chassis sewage treatment vehicle) as an example, verification steps are as follows: 1. Access the MIIT official website: Navigate to the 'Road Motor Vehicle Manufacturers and Products Information Inquiry System'. 2. Enter the Announcement Model Number: Input 'CLW5070GSSD6' to retrieve key data including o