Government Procurement Case and Bid-Winning Solution Analysis for the Dongfeng Yizhan-Style Sewage Treatment Vehicle in Zhoukou: In early 2025, a municipal sanitation department in Zhoukou issued a public tender for a batch of sewage treatment vehicles, intended for emergency treatment of black-and-odorous water bodies and sewer network cleaning operations within the urban area. After multiple rounds of evaluation, Chengli Special Purpose Vehicle Co., Ltd. won the bid with its Dongfeng Yizhan-style sewage treatment vehicle solution, delivering five units at an approximate unit price of RMB 380,000 (per publicly available tender information), keeping the total budget within RMB 2.184 million. This article analyzes, based on this case, the vehicle acceptance process, parameter verification, and Chengli’s delivery workflow, providing reference for similar procurement projects. I. Ten Mandatory Inspection Items Upon Vehicle Receipt In the Zhoukou case, the customer conducted on-site inspections item-by-item upon delivery to ensure regulatory compliance and eliminate potential hazards: 1. Chassis Model Consistency with Official Announcement: Verify that the chassis nameplate (e.g., Dongfeng EQ1075SJ3CDF) matches the Ministry of Industry and Information Technology (MIIT) announcement (e.g., CLW5070GSSD6) to prevent incorrect installation. 2. Engine and Emission Standard Compliance: Confirm the China VI emission label and verify consistency between the engine number and the Certificate of Conformity, avoiding outdated inventory units. 3. Sewage Treatment Tank Sealing Integrity: Inspect weld seams and flange joints on the tank for leaks; conduct vacuum pressure testing. 4. Yizhan-Style Tarpaulin Mechanism: Manually and electrically test extension/retraction smoothness—no jamming or abnormal noise permitted. 5. Hydraulic System and Piping: Check hydraulic cylinders and hose connections for oil leakage; verify hydraulic pump operating pressure meets specifications. 6. Electrical and Control Systems: Test functionality of water pumps, vacuum pumps, lighting, and warning lights. 7. Tires and Running Gear: Inspect tire model, inflation pressure, tread wear, and brake system responsiveness. 8. Onboard Tools and Documentation: Confirm completeness of tools, fire extinguisher, and warning triangle; review Certificate of Conformity, user manual, and warranty card. 9. Overall Appearance and Paint Finish: Check for paint surface smoothness and absence of scratches; verify reflective strips and markings comply with regulations. 10. Test Drive and Road Testing: Conduct short-distance driving within the facility to evaluate steering, braking, noise, and vibration performance. II. MIIT Parameter Verification Methodology To ensure normal registration and annual inspection, all parameters must be verified against official MIIT announcement data. Taking Chengli’s Dongfeng Yizhan-style sewage treatment vehicle (model CLW5070GSSD6) as an example, verification steps include: • Obtain Announcement Information: Download the 'Announcement of Road Motor Vehicle Manufacturers and Products' parameter sheet for the corresponding model from the MIIT official website or Chengli’s official website (www.clspecial.com). • Verify Chassis Parameters: Cross-check chassis model, wheelbase (3,308 mm), and tire specifications (7.00R16LT) against physical vehicle data. • Verify Body-Mounted Equipment Parameters: Confirm tank capacity (~3.5 m³), rated payload (~2 tons), and suction capacity (≥50 m³/h). • Verify Dimensions and Weight: Check overall vehicle dimensions (approx. 5,995 × 2,050 × 2,650 mm), kerb weight (~4.8 tons), and gross vehicle weight (~7.3 tons) to ensure compliance with legal limits. During acceptance, the Zhoukou client engaged a third-party inspection agency to perform on-site verification—no discrepancies were identified, and the entire process was completed within two days.