Government Procurement Case and Bid-Winning Solution Analysis of the New Dongfeng Sewage Treatment Vehicle in Yangzhou In 2026, the municipal sanitation department of a district in Yangzhou City publicly tendered for a batch of new Dongfeng sewage treatment vehicles to meet urban sewage treatment demands. This procurement prioritized enhancing sewage suction and discharge efficiency in old residential communities and industrial parks, while simultaneously addressing environmental sustainability and cost control. Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as “Chengli”) successfully delivered the required vehicles, capitalizing on its fully certified vehicle models, factory-direct pricing advantage, and comprehensive after-sales service system. This article uses this case as a foundation to conduct an in-depth analysis from the following perspectives: cost comparison between fuel-powered and battery-electric variants, differences in operational application scenarios, charging infrastructure requirements, and Chengli’s electric vehicle solutions. I. Case Background and Procurement Requirements The district’s municipal sanitation department explicitly stipulated in its tender documents that the vehicles must possess sewage treatment, vacuum suction, and preliminary purification capabilities; the chassis must be Dongfeng-branded; and emissions compliance must meet China VI standards (where applicable). The total budget was capped at approximately RMB 344,000 per unit, with an indicative unit price of around RMB 250,000 (based on publicly available tender information). Due to certain operation zones being located in historic urban areas with narrow roads, high vehicle maneuverability was required. Additionally, the procuring entity placed special emphasis on post-purchase maintenance costs and regulatory compliance with environmental policies—thus expressing interest in new-energy (battery-electric) solutions, while requiring suppliers to submit detailed comparative data between fuel-powered and electric variants. Chengli’s newly launched Dongfeng sewage treatment vehicle (e.g., a modified model based on CLW5070GSSD6) fully met all tender requirements. Its chassis is built on the Dongfeng Dorica platform, featuring a wheelbase of 3,308 mm and powered by a China VI-compliant diesel engine. The vehicle holds complete official certification, enabling nationwide registration and annual inspection. Prior to bidding, Chengli’s sales manager Zhang Yue (phone: ) conducted multiple technical coordination sessions with the procuring party to ensure optimal solution alignment. II. Fuel-Powered vs. Battery-Electric Version: Cost Comparison Analysis For this procurement, Chengli offered two alternative configurations: a fuel-powered version (China VI Dongfeng diesel) and a battery-electric version (customizable upon future demand), along with a comparative cost analysis. The table below is compiled based on MIIT-certified parameters and real-world operational data, serving as a reference for procurement decision-making. Comparison Item Fuel-Powered Version (Dongfeng China VI Diesel) Battery-Electric Version (Reference Public Charging Mode) Vehicle Unit Price (incl. tax) Approx. RMB 250,000 (per public tender data) Approx. RMB 350,000–400,000 (electric premium ~40% per local procurement practice) Energy Cost (per 100 km) Approx. RMB 120 (diesel at RMB 7.5/L; fuel consumption: 16 L/100 km) Approx. RMB 50 (electricity at RMB 0.6/kWh; energy consumption: 80 kWh/100 km) Annual Operating Cost (20,000 km/year) Approx. RMB 24,000 (fuel only, excluding maintenance) Approx. RMB 10,000 (electricity only) Maintenance Frequency Every 5,000 km; annual maintenance cost approx. RMB 5,000 Every 10,000 km; annual maintenance cost approx. RMB 2,000 Expected Service Life 8–10 years 6–8 years (battery degradation considered) Environmental Policy Alignment Complies with China VI emission standards; subject to traffic restrictio