Government procurement case of Dongfeng single-cab sewer cleaning truck (blue license plate, 5-cubic-meter capacity) in Ordos City, Inner Mongolia: Practical experience from pilot deployment to system upgrade. In Ordos, Inner Mongolia, aging urban drainage infrastructure and frequent rainstorm-induced flooding prompted a district-level municipal sanitation department to launch its first centralized procurement of sewer cleaning equipment in 2023. Due to tight budget constraints and a firm requirement for the maneuverability of blue-plate vehicles, the department selected the Dongfeng single-cab sewer cleaning truck (blue plate, 5 m³) as its initial pilot model. This article uses the department’s actual procurement experience as a foundation and integrates CLW Special Purpose Vehicle Co., Ltd.’s (CLW) winning bid proposal to thoroughly examine the equipment selection logic and field performance underlying iterative demand evolution. I. First Batch Procurement: Initial Deployment Reveals Real Pain Points In spring 2023, the department procured three units of the Dongfeng single-cab sewer cleaning truck via public tender, with a unit budget capped at approximately RMB 135,000 (per publicly available tender information). The winning bidder was a small-scale bodybuilder, utilizing a Dongfeng chassis, a nominal 5-cubic-meter tank, a high-pressure cleaning pump, and a vacuum suction system. However, operational issues quickly emerged: • Low cleaning efficiency: Insufficient high-pressure pump pressure delivered poor results in heavily silted pipelines—especially on sandy sections—requiring repeated cleaning per operation. • Weak suction capability: Limited vacuum pump lift range caused frequent clogging when extracting sludge from deep wells (>3 meters), necessitating manual assistance and reducing overall operational efficiency by ~40%. • Delayed after-sales service: Local chassis service stations responded slowly to breakdowns; non-OEM upfit components further complicated repairs, resulting in an average vehicle downtime of seven days. “We overemphasized low cost and overlooked compatibility between upfit configurations and after-sales support,” recalled the department’s procurement director. Poor performance during the 2023 flood emergency prompted a comprehensive revision of tender specifications for the second procurement round in 2024. II. Upgraded Requirements: Evolution from ‘Functional’ to ‘High-Performance’ In early 2024, the department reissued its sewer cleaning truck tender, with core requirements upgraded to: • Blue-plate, 5-m³ Dongfeng chassis (e.g., CLW5070GSSD6 series reference models): Nationwide chassis warranty and OEM upfit service required. • High-pressure pump output ≥25 MPa, capable of handling sand-laden silt deposits. • Vacuum pump lift ≥6 meters, ensuring reliable deep-well suction. • Tank material upgraded to Q345B steel for enhanced corrosion resistance and wear durability. • Unit budget capped at ~RMB 152,000 (in line with local procurement norms), with explicit stipulation of “direct factory delivery, zero inventory.” Among numerous bidders, CLW Special Purpose Vehicle stood out due to its complete regulatory compliance documentation, transparent configuration details, and nationwide after-sales service network—and ultimately delivered four units of the Dongfeng single-cab sewer cleaning truck (blue plate, 5 m³). Public tender records indicate CLW’s winning price was RMB 128,000 per unit (tax-inclusive landed cost), significantly below market benchmarks for comparable models (~RMB 158,000–169,000), while guaranteeing standard-model delivery within 15 days. III. CLW Solution Analysis: Why It Resolved Critical Pain Points Tailoring its solution to Ordos’ local conditions—including high sand content and frozen soil—CLW implemented targeted upgrades: • Chassis & Powertrain: Dongfeng single-cab cab equipped with a Tier VI diesel engine, compliant with blue-plate Class C driver licensing requirements.