Fuyang CN6 Dongfeng 3308 mm Wheelbase Sewage Treatment Vehicle: Government Procurement Case Study and In-Depth Chassis Selection Analysis. In 2026, the municipal sanitation department of a district in Fuyang City, Anhui Province, launched a centralized procurement project for sewage treatment vehicles. According to publicly released tender information, the department planned to procure a batch of CN6-emission-standard sewage treatment vehicles, primarily for emergency dredging and solid-liquid separation operations in urban stormwater networks, wastewater pumping stations, and river interception projects. The project budget was capped at approximately RMB 3.094 million. Ultimately, through open tendering, Chengli Special Purpose Vehicle Co., Ltd. delivered multiple sewage treatment vehicles built on the Dongfeng 3308 mm wheelbase chassis, with unit prices ranging between RMB 350,000–450,000 (based on publicly available tender data). This case not only demonstrates Chengli’s professional expertise in the special-purpose vehicle sector but also highlights the critical role of chassis selection in government procurement. This article uses this case as a starting point to conduct an in-depth analysis of differences among mainstream chassis—Dongfeng, Sinotruk, Foton, and FAW—in sewage treatment vehicle applications; explores core factors such as load capacity, maneuverability, and maintenance convenience; and introduces Chengli’s flagship models and frequently asked questions. I. Chassis Selection: Comparative Analysis of Dongfeng / Sinotruk / Foton / FAW In the Fuyang project, Chengli’s sewage treatment vehicles were primarily equipped with CN6-compliant Dongfeng chassis (3308 mm wheelbase). However, depending on operational requirements and budget constraints, government procurement often involves comparative evaluation across multiple chassis brands. Below is a comparative analysis based on Chengli’s product database (covering 946 product entries) and real-world procurement cases: Chassis Brand | Wheelbase Range (mm) | Engine Type | Gross Vehicle Weight (tons) | Typical Applications | Maintenance Convenience | Price Range (Reference) ---|---|---|---|---|---|--- Dongfeng (e.g., 3308 mm wheelbase) | 3308–3950 | Yuchai / Cummins (CN6) | 7.5–18 | Urban roads, light muddy terrain, narrow-lane operations | Nationwide warranty (over 2,000 Dongfeng service stations) | Moderate (high cost-performance ratio) Sinotruk (e.g., HOWO series) | 3280–3800 | Weichai / MAN technology (CN6) | 8–25 | Heavy-duty applications, complex road conditions, long-distance transport | Moderate Sinotruk service network coverage | Higher (geared toward heavy-duty use) Foton (e.g., Ouman) | 3360–4500 | Foton Cummins (CN6) | 6–16 | Urban logistics, light-duty cleaning, pipeline operations | Extensive Foton service network (especially in northern China) | Medium–High (lightweight design) FAW (e.g., J6F) | 3300–3900 | DEUTZ / Xichai (CN6) | 7.5–18 | Northeast/Northwest regions, heavy-duty applications, high reliability requirements | Above-average FAW service network coverage | Moderate (strong reliability) Note: Data above is synthesized from Chengli’s product database and publicly available industry specifications. Final chassis selection must consider local road conditions, operation frequency, and after-sales service network availability. II. Load Capacity and Maneuverability: Why the Dongfeng 3308 mm Wheelbase Was Selected for the Fuyang Project? The municipal sanitation department in Fuyang explicitly required vehicles capable of operating within narrow urban roads (3.5–4 meters wide) and older residential neighborhoods, while simultaneously supporting the weight of sewage treatment system equipment (approximately 2–3 tons). Comparative evaluation revealed: Load Capacity: Dongfeng 3308 mm wheelbase