Case Study: Bulk Procurement of 24-cubic-meter Sludge Self-Dumping Trucks by a Municipal Sanitation Department in Ganzhou In 2025, a municipal sanitation department in Ganzhou launched a public tender for a batch of 24-cubic-meter sludge self-dumping trucks built on Sinotruk chassis, targeting persistent logistical challenges in transporting sludge from urban wastewater treatment plants. The initiative aimed to enhance sludge transfer efficiency and reduce secondary pollution during transportation. Chengli Special Purpose Vehicle Co., Ltd. ultimately delivered six complete vehicles, with a cumulative contract value of approximately RMB 1.5 million (per publicly disclosed tender information). This article comprehensively analyzes the procurement background, solution selection, vehicle configuration, and user feedback—providing practical, actionable reference for similar organizations. I. Procurement Background and Requirements Analysis The client is responsible for sludge removal operations across municipal wastewater treatment plants in Ganzhou’s main urban area and surrounding townships. Its existing fleet suffered from aging units and poor sealing performance, resulting in frequent leakage incidents and insufficient per-trip capacity—leading to high operational costs. Per local procurement conventions, newly acquired vehicles were required to meet the following core criteria: - Chassis Brand: Sinotruk, ensuring powertrain reliability and durability; - Body Capacity: 24 cubic meters, compatible with existing loading equipment; - Sealing Standard: Fully sealed, leak-proof design compliant with environmental protection regulations; - Emission Standard: China VI, ensuring road legality and regulatory compliance. Following extensive market research, the client selected Chengli Special Purpose Vehicle Co., Ltd. as its supplier. Key reasons included: Chengli’s local manufacturing base in Suizhou; full official model certifications (including CLW-series models); and over 500 successful service cases with municipal sanitation departments nationwide—enabling comprehensive bid support and lifelong after-sales service for the superstructure. II. Vehicle Configuration and Winning Proposal Analysis The delivered vehicles feature Sinotruk chassis integrated with Chengli’s proprietary 24-cubic-meter fully enclosed sludge self-dumping body. Key configurations are summarized below: Comparison of Main Specifications for Ganzhou’s 24-cubic-meter Sludge Self-Dumping Trucks (Based on MIIT Announcement Parameters) | Item | Chengli Winning Proposal | Common Market Alternatives | |------|--------------------------|----------------------------| | Chassis Model | Sinotruk (e.g., ZZ1257 series) | Sinotruk or other brands | | Body Capacity | 24 m³ | 18–25 m³ (customizable) | | Sealing Method | Hydraulic full-seal system with automatic rear-door locking | Conventional sealing or manual locking | | Emission Standard | China VI | China VI | | Hydraulic System | Dual-cylinder lifting system—stable and reliable | Single- or dual-cylinder (brand-dependent) | | After-Sales Service | Nationwide chassis warranty + lifetime superstructure service | Standard warranty: 1–2 years | | Delivery Lead Time | 15 working days | 30–45 days (for some brands) | | Unit Price Reference | ~RMB 250,000–280,000/unit (per public tender data) | ~RMB 280,000–320,000/unit (market average) | As shown above, the Chengli solution demonstrates clear advantages in sealing performance, delivery speed, and cost control. Notably, the hydraulic full-seal design effectively prevents sludge spillage, dripping, or leakage during transit—fully satisfying local environmental inspection requirements. Moreover, as a direct manufacturer, Chengli eliminates distributor markups: compared to 4S-channel pricing, this saves approximately RMB 8,000–15,000 per unit—yielding a total budget reduction of RMB 60,000–90,000 across all six units. III. Delivery and Operational Feedback According to cli