Interpretation of the 2025 Xuzhou SINOTRUK Sludge Self-Dumping Truck (24 m³) Government Procurement Case and Winning Bid Solution In 2025, a municipal sanitation department initiated a procurement project for 24 m³ sludge self-dumping trucks to address low transportation efficiency and high environmental protection requirements at urban wastewater treatment plants. Preliminary research revealed that mainstream market solutions focused on SINOTRUK chassis combined with high-strength sealed bodies, with budgets controlled within approximately RMB 564,000 (based on publicly available tender information). Ultimately, Chengli Special Purpose Vehicle successfully delivered three SINOTRUK 24 m³ sludge self-dumping trucks using a 'pilot unit → performance evaluation during trial period → comparative analysis against other brands → decision for bulk procurement' model, earning long-term customer trust. This article provides an in-depth analysis of this case to support decision-making for similar procurement projects. I. Project Background and Requirements Analysis The municipal sanitation department is responsible for sludge transfer operations across six wastewater treatment plants in its jurisdiction, handling an average daily volume of approximately 80 tons. Existing transport vehicles suffered from poor sealing, incomplete unloading, and insufficient chassis load-bearing capacity—resulting in leakage en route and frequent maintenance. Key procurement requirements included: 24 m³ sludge self-dumping truck, SINOTRUK chassis, China VI emission standard, hydraulic sealing cover, and corrosion-resistant body. Through publicly available tender information, the client learned that Chengli Special Purpose Vehicle (located at No. 1 Chengli Avenue, Suizhou Economic Development Zone, Hubei Province; official website: www.clspecial.com) possesses extensive experience in similar projects—including delivery of four vacuum cleaning/suction trucks to Sichuan municipal authorities and two compression garbage trucks to a Zhejiang property management company—with consistently high after-sales service ratings. Consequently, the client procured one unit initially for trial use. II. Pilot Unit: Vehicle Configuration and Performance Records The pilot vehicle supplied by Chengli was built on a SINOTRUK chassis, model CLW5250ZWXZ6 (referencing MIIT announcement parameters), with the following core specifications: - Chassis brand: SINOTRUK HOWO; engine: 220 hp; emission standard: China VI - Body capacity: 24 m³, constructed from high-strength weathering steel with interior anti-corrosion coating - Sealing system: hydraulic automatic sealing cover with anti-leakage device - Unloading method: hydraulic tipping cylinder; maximum tilt angle: 50°; unloading time ≤ 30 seconds - Additional features: hydraulic rear door locking mechanism; integrated intelligent vehicle monitoring system - Reference price: approx. RMB 460,000 per unit (based on local procurement practices) The trial period lasted three months, during which the client recorded the following key performance data: | Evaluation Item | Trial Data | Notes | |-------------------------|----------------------------------|-----------------------------------------------------------------------| | Average Daily Trips | 6 trips (at full capacity) | 30% improvement in efficiency vs. legacy vehicles | | Sealing Performance | Zero leakage | Passed municipal environmental inspections | | Residual Material Rate | ≤ 2% | Compared to 10% residual rate for legacy vehicles | | Failure Incidents | 1 (loose hydraulic pipe fitting) | Repaired by Chengli after-sales team within 24 hours | | Fuel Consumption (per 100 km) | 28 L | 2–3 L/100 km better than comp