Jinhua’s EHY5045TWCE6 Sewage Treatment Vehicle (3308 wheelbase) Government Procurement Case: In-depth Analysis of Chassis Selection and Technical Solution Amid accelerating urbanization, municipal sanitation departments’ demand for sewage treatment vehicles is growing steadily—especially for sewage suction, discharge, and transfer operations in residential communities and industrial parks. A municipal sanitation department in Jinhua launched a procurement project for sewage treatment vehicles at the end of 2025, ultimately selecting Chengli Special Purpose Vehicle Co., Ltd.’s EHY5045TWCE6 model, priced at approximately RMB 185,000 (based on publicly released tender information). This article provides a comprehensive technical solution analysis—from chassis selection, load-bearing capacity, and off-road capability to maintenance convenience—leveraging Chengli’s flagship models to support informed procurement decisions. I. Project Background and Requirements Analysis In Q3 2025, the Urban Management Bureau of a district in Jinhua issued a procurement notice seeking two sewage treatment vehicles with a 3308 mm wheelbase for emergency sewage response and routine suction/discharge operations within its jurisdiction. Per local procurement practices, the total budget was capped at RMB 400,000. Key requirements included compliance with China VI emission standards, stable hydraulic systems, highly corrosion-resistant tanks, and adaptability to Jinhua’s rainy climate and infrastructure featuring numerous bridges and underpasses. Leveraging its extensive product catalog (e.g., CLW5070GSSD6) and nationwide warranty service network, Chengli Special Purpose Vehicle proposed the EHY5045TWCE6 solution and successfully delivered two units. Customer feedback confirms stable and reliable operation to date. II. Chassis Selection Comparison: Dongfeng vs. Sinotruk vs. Foton vs. FAW The chassis serves as the foundational platform of a sewage treatment vehicle—directly influencing load capacity, maneuverability, and long-term maintenance costs. For this project, Chengli prioritized Dongfeng chassis but also offered alternative brand options to accommodate diverse operational scenarios. The comparative analysis below draws upon 108 entries from the MIIT’s official vehicle announcement database and 946 records from Chengli’s internal product database: Chassis Brand | Wheelbase (mm) | Engine Power (kW) | Rated Payload (kg) | Off-Road/Maneuverability Advantage | Maintenance Convenience | Recommended Application Scenario ---|---|---|---|---|---|--- Dongfeng (e.g., EQ1045SJ3CDF) | 3308 | 95–110 | 1,500–2,000 | Small turning radius—ideal for narrow urban streets | Over 3,000 authorized service outlets nationwide | Municipal residential communities, industrial parks Sinotruk (e.g., ZZ1047F3315F145) | 3280 | 100–120 | 1,800–2,200 | High load-carrying capacity—suited for heavy-duty applications | Limited service coverage in certain regions | Large construction sites, suburban areas Foton (e.g., BJ1045V9JDA-AB1) | 3360 | 90–105 | 1,400–1,800 | Low fuel consumption—excellent cost-efficiency | Broad national service network coverage | Light-duty operations FAW (e.g., CA1040P40K61L2BE6A84) | 3300 | 95–110 | 1,600–2,000 | Superior chassis stability | Dense service network in northern China | Long-distance transportation Note: Parameters above are compiled from Chengli’s internal product database and the MIIT’s official vehicle announcements; actual configurations shall be subject to contractual specifications. For the Jinhua project, Chengli selected the Dongfeng EQ1045SJ3CDF chassis, originally...