Interpretation of the Government Procurement Case and Winning Bid Solution for the Dongfeng Double-Cab Sewage Suction Truck (Blue License Plate, 3-cubic-meter Capacity) in Dalian In a public tender conducted by a municipal sanitation department in Dalian, a Dongfeng double-cab blue license plate 3-cubic-meter sewage suction truck became the key equipment for resolving urban drainage system blockages. According to publicly available tender information, the procurement budget was controlled at approximately RMB 202,000, and the vehicle—model CLW5070GSSD6 (modified on Dongfeng chassis)—was ultimately delivered by Chengli Special Purpose Vehicle Co., Ltd. This article interprets practical implementation points of such procurement cases from dimensions including acceptance criteria, MIIT parameter verification, delivery procedures, and winter adaptability. I. Ten Mandatory Inspection Items Upon Vehicle Receipt In cold-climate regions like Dalian, acceptance of sewage suction trucks requires special attention to freeze protection and hydraulic systems. Below are ten critical items verified by a subdistrict environmental maintenance unit during vehicle receipt in early 2026, based on Chengli’s delivery checklist: 1. Chassis Model and Engine Serial Number: Must match contractual specifications; the Dongfeng double-cab chassis must comply with China VI emission standards. 2. Tank Volume and Material: 3-cubic-meter tank fabricated from Q235 carbon steel, minimum thickness ≥4 mm, with weld seams free of porosity. 3. Hydraulic System Sealing Performance: No leakage observed in hydraulic oil lines, and hydraulic cylinders operate smoothly at -15°C ambient temperature. 4. Antifreeze and Coolant: Must be filled with -35°C-rated antifreeze to prevent freezing under Dalian’s winter low temperatures. 5. Power Take-Off (PTO) Functionality: PTO engages smoothly upon gear engagement, with no abnormal noise. 6. Sealing Cover and Discharge Outlet: Top tank sealing cover locks securely; bottom discharge valve operates reliably in both manual and pneumatic modes. 7. Lighting and Warning Devices: Front/rear headlights, turn signals, reverse warning buzzer, and warning lights all function properly. 8. Tires and Spare Tire: 7.00R16 steel-belted radial tires, inflation pressure 2.5–3.0 MPa; spare tire securely mounted. 9. Onboard Tools and Documentation: Includes jack, wrench set, Certificate of Conformity, warranty card, and chassis user manual. 10. Environmental Compliance Label: Exhaust emission label complies with Dalian city’s vehicle admission requirements. Per local procurement practice, formal sign-off is required upon successful acceptance. Chengli’s after-sales team provides on-site operational training to ensure seamless subsequent use. II. MIIT Parameter Verification Methodology Parameter consistency is a core requirement in government procurement. For Chengli’s CLW5070GSSD6 model, the officially announced parameters include: - Gross Vehicle Weight (GVW): 7,360 kg (drivable with Class C1 driver’s license) - Rated Payload Capacity: 3,370 kg (for 3 cubic meters of sewage) - Overall Dimensions: 5,995 × 1,980 × 2,600 mm (complies with Dalian’s urban road height restrictions) - Engine: Quanchai 115 hp diesel engine, max torque 320 N·m—optimized for low-speed sewage suction operations - Wheelbase: 3,308 mm, turning radius ≤6.5 m—suitable for narrow urban streets During acceptance, the Urban Management Bureau of a district in Dalian directly accessed the official website of the Ministry of Industry and Information Technology (MIIT) “List of Road Motor Vehicle Manufacturers and Products”, entered model number CLW5070GSSD6, and verified each of the above parameters one by one. Any discrepancy—e.g., in tank volume or chassis model—entitles the buyer to immediate rejection. As a fully listed manufacturer, Chengli ensures full alignment between its product parameters and those published in the MIIT announcement, eliminating potential issues during re