Government procurement case of Yichang Dongfeng double-cab sewer cleaning truck (blue license plate, 3 m³): Cost comparison and solution analysis. In 2025, a municipal sanitation department in Yichang City, Hubei Province, publicly tendered for a batch of sewer cleaning trucks to meet urban drainage network maintenance needs. Chengli Special Purpose Vehicle Co., Ltd. delivered five Dongfeng double-cab sewer cleaning trucks, including three blue-plate 3-m³ models (reference model: CLW5070GSSD6 base type), deployed for pipeline cleaning in old residential communities and narrow streets. This article provides an in-depth analysis from the perspectives of cost comparison, application scenarios, charging infrastructure requirements, and Chengli’s tailored solution. Project Background and Requirements Analysis This procurement initiative stems from Yichang City’s 2025 Urban Drainage System Upgrade Plan, requiring vehicles with the following features: • Blue license plate, drivable with Class C driver’s license: lowers driver qualification thresholds and accommodates frontline sanitation staffing. • 3-m³ tank capacity: suitable for daily sludge removal volumes of approximately 10–15 m³, reducing the frequency of trips to disposal sites. • Double-cab driving compartment: enables simultaneous transport of both operator and driver, improving personnel logistics efficiency. • China VI emission standard compliance: meets local environmental regulations; all chassis options (e.g., Dongfeng, Sinotruk) satisfy this requirement. According to publicly released tender information, the total project budget was capped at approximately RMB 2.066 million, with an average per-unit budget of around RMB 413,000. Chengli secured the contract at an average unit price of approximately RMB 320,000—about RMB 14,000 less per unit than comparable 4S-channel market quotations—primarily attributable to its direct factory sales model. Cost Comparison: Fuel-Powered vs. Battery-Electric Versions During procurement decision-making, Yichang’s municipal authorities conducted a comprehensive lifecycle cost comparison between fuel-powered and battery-electric sewer cleaning trucks. Below is a data comparison based on the CLW5070GSSD6 chassis: Yichang Dongfeng Double-Cab Sewer Cleaning Truck (Blue License Plate, 3 m³): Fuel-Powered vs. Battery-Electric Cost Comparison Comparison Item Fuel-Powered Version (Dongfeng Chassis) Battery-Electric Version (Reference Comparable Model) Purchase Cost (per unit) Approx. RMB 320,000 (Chengli winning bid price) Approx. RMB 550,000–650,000 (based on public tender data) Annual Energy Cost Approx. RMB 35,000 (diesel; assuming 2,000 operating hours/year) Approx. RMB 12,000 (electricity; at RMB 0.6/kWh) Annual Maintenance Cost Approx. RMB 18,000 (engine & transmission servicing) Approx. RMB 8,000 (battery & motor maintenance) 5-Year Total Cost RMB 320,000 + (RMB 35,000 + RMB 18,000) × 5 = RMB 585,000 RMB 550,000 + (RMB 12,000 + RMB 8,000) × 5 = RMB 650,000 Annual Carbon Emissions Approx. 8 tons 0 tons (indirect emissions depend on grid power source) Charging Infrastructure Requirement None required Approx. RMB 50,000 per unit for dedicated charging station Range & Operational Radius Up to 8–10 consecutive hours on full tank Approx. 4–6 hours on full charge (mid-shift recharging required) Applicable Scenarios Long-distance, high-intensity operations Short-distance, low-intensity, or environmentally sensitive zones As shown in the table, the 5-year total cost for the fuel-powered version is approximately RMB 585,000, while that for the battery-electric version—including charging infrastructure—is about RMB 650,000, representing an 11% premium. However, given Yichang City’s new-energy vehicle subsidy (approx. RMB 100,000 per unit), the effective 5-year total cost for the battery-electric version drops to roughly RMB 550,000—slightly below the fuel-powered alternative. Nevertheless, considering the high operational intensity and demand