Langfang 3308 Yellow-Plate Sewage Treatment Vehicle Government Procurement Case and Chassis Selection Solution Analysis In North China—particularly in cities like Langfang, Hebei Province, which combine urban and industrial zones—municipal sanitation departments’ requirements for sewage treatment vehicles are becoming increasingly refined. Recently, the Urban Management Bureau of a district in Langfang launched a public tender for a 3308 yellow-plate sewage treatment vehicle project, with a budget capped at approximately RMB 394,000 (per publicly available tender information). This article uses this case as a reference to deeply analyze how scientific decisions can be made in government procurement scenarios—from chassis selection, load-bearing capability and off-road passability, to maintenance convenience. As one of China’s largest special-purpose vehicle manufacturers, Chengli Special Purpose Vehicle offers multiple chassis options—including Dongfeng, Sinotruk, Foton, and FAW—whose customized solutions have drawn significant attention in actual procurement processes. I. Case Background and Project Overview Due to frequent blockages in drainage networks across aging residential communities and industrial parks within its jurisdiction, the municipal sanitation department of a district in Langfang plans to procure a batch of yellow-plate sewage treatment vehicles. The project requires vehicles capable of high-efficiency suction, solid-liquid separation, sewage purification, and temporary storage, while complying with China VI emission standards and maintaining maneuverability on narrow urban streets and some rural unpaved roads. A total of three vehicles are to be procured, with an approximate unit budget of RMB 394,000 (based on local procurement conventions). Leveraging extensive experience in government and enterprise cooperation—including prior deliveries of sanitation vehicles to Wuhan Urban Management Bureau and industrial parks in Guangdong Province—Chengli Special Purpose Vehicle submitted customized solutions based on various chassis platforms for this tender. The core trade-off in chassis selection centered on balancing payload capacity (to accommodate the weight of the treatment tank) against vehicle agility and maintenance convenience under Langfang’s complex urban and peri-urban road conditions. II. Chassis Selection Comparison: Analysis of Differences Among Dongfeng, Sinotruk, Foton, and FAW In government procurement, chassis selection directly determines overall vehicle performance, operating cost, and post-sales maintenance efficiency. Below is a comparative analysis of four commonly used chassis options for the 3308 yellow-plate sewage treatment vehicle: Chassis Brand | Typical Model (Reference) | Wheelbase (mm) | Engine Power (kW) | Curb Weight (kg) | Application Scenario | Maintenance Convenience ---|---|---|---|---|---|--- Dongfeng | CLW5180GSSD6 (based on Dongfeng D9) | 3308 | 118 (Cummins/Yuchai) | ~4,500 | Urban roads, medium- and short-distance operations; dense after-sales service network | ★★★★★ (Nationwide warranty coverage; parts readily available) Sinotruk | Sinotruk HOWO Series | 3300 | 132 (Weichai) | ~4,800 | Heavy-load operations, industrial zones; strong chassis load-bearing capacity | ★★★★ (Parts may require advance stocking in certain regions) Foton | Foton Ouman S3 | 3360 | 115 (Cummins) | ~4,400 | Light-load applications, urban expressways; favorable fuel economy | ★★★★ (Extensive service station network) FAW | FAW J6F | 3300 | 121 (FAW Diesel) | ~4,600 | Township roads, unpaved surfaces; superior passability | ★★★ (Extensive service network in northern China; relatively fewer outlets in southern regions) Note: Parameters above are sourced from Chengli’s product database and MIIT announcements (e.g., CLW5180GSSD6); actual configurations are subject to contractual specifications. 2.1 Load-Bearing Capacity and