Government Procurement Case and Bid-Winning Solution Analysis of the Dongfeng Yizhan-Style Sewage Treatment Vehicle in Fuyang City As environmental regulations become increasingly stringent, sewage treatment vehicles have become essential equipment for municipal sanitation departments. In 2025, a municipal sanitation department in Fuyang City, Anhui Province, conducted a public tender for a batch of sewage treatment vehicles. Chengli Special Purpose Vehicle Co., Ltd. successfully delivered three units of model CLW5180GSSD6 sewage treatment vehicles, leveraging its Dongfeng Yizhan-series product and comprehensive after-sales service plan. This article provides an in-depth analysis—from procurement background and solution comparison to implementation and common issues—offering authentic reference for government procurement decision-makers. I. Procurement Background and Requirements Analysis A district-level sanitation department in Fuyang City faces recurring challenges due to aging urban pipelines and increased industrial wastewater discharge, necessitating regular dredging and sewage treatment of rivers and sewer pipes. In early 2025, the department planned to procure a batch of sewage treatment vehicles for emergency drainage, sewage suction, and preliminary purification. The procurement budget was capped at approximately RMB 2.251 million, with mandatory requirements including: China VI emission standard compliance, Dongfeng chassis, large-capacity sewage tank, wing-type expandable body for convenient maintenance, and stable operation under complex road conditions. According to publicly released tender documents, the department specified clear technical requirements for core vehicle parameters: effective tank capacity ≥ 8 m³; self-priming and self-discharging system; hydraulic wing-type expansion mechanism; and remote monitoring interface. Chengli’s Dongfeng Yizhan-style sewage treatment vehicle (model CLW5180GSSD6) fully met these requirements. Its chassis is based on the Dongfeng DOLICA D9 series; engine output is 160 hp; the tank is fabricated from high-quality carbon steel plates supplied by Wuhan Iron and Steel Group (WISCO), with anti-corrosion treatment applied. II. Key Insights into the Winning Bid Solution Chengli Special Purpose Vehicle secured the contract through a “direct factory sales + full-lifecycle service” pricing strategy—a common practice in local government procurement. The unit price offered was approximately RMB 619,000 (tax-inclusive landed cost), totaling about RMB 1.857 million for three units—well within the budget ceiling. Compared with competing offerings, Chengli’s proposal demonstrated advantages across three key dimensions: • Chassis Advantage: Dongfeng chassis offers nationwide warranty coverage, high parts interchangeability, and low maintenance costs; • Superstructure Configuration: The hydraulic wing-type body opens up to 90°, facilitating internal equipment inspection and maintenance; the tank features internal baffles to minimize liquid surge and enhance driving stability; • After-Sales Commitment: Chengli provides lifetime service for the superstructure, original Dongfeng chassis warranty, and 24-hour direct shipment of spare parts—ensuring peace of mind for end users. Case Highlight: For the Fuyang project, Chengli not only supplied the vehicles but also collaborated with a local service station to deliver a three-day operator training program and provided a spare parts kit. Customer feedback stated: “From contract signing to vehicle delivery, it took only 15 days—remarkably efficient.” III. Comparative Technical Specifications of Similar Vehicles To assist procurement entities in making intuitive comparisons, below are key technical specifications of Chengli’s Dongfeng Yizhan-style sewage treatment vehicle (CLW5180GSSD6) versus two common competitors (data sourced from MIIT announcements and publicly available tender documents): | Parameter | Chengli CLW5180GSSD6 | Competit