Government procurement case of the Yibin Dongfeng Yizhan-style sewage treatment vehicle: Analysis of emergency replenishment procurement and efficient delivery solutions. In summer 2025, a municipal sanitation department in Yibin faced an emergency: domestic sewage overflow caused by aging pipeline renovation works, coupled with insufficient processing capacity of existing equipment, necessitating urgent procurement of high-efficiency sewage treatment vehicles. The department immediately initiated an emergency replenishment procurement process and acquired the Dongfeng Yizhan-style sewage treatment vehicles via public tender. Chengli Special Purpose Vehicle Co., Ltd. successfully delivered multiple units compliant with China VI emission standards, leveraging rapid response, localized production, and complete official vehicle announcements. This article analyzes the real-world case from five perspectives: background of the sudden demand, emergency tendering process, Chengli’s rapid response and delivery, problem resolution, and FAQs. I. Background of Sudden Demand: Emergency Procurement Triggered by Sewage Incident In June 2025, continuous heavy rainfall in a district of Yibin caused sewer overflows, resulting in sewage spillage that disrupted residents’ daily life. According to publicly available tender information, the local sanitation department urgently required 5–8 sewage treatment vehicles, specifying requirements including high-efficiency suction capability, solid-liquid separation functionality, and emergency response readiness. The budget was capped at approximately RMB X million, with delivery required within 30 days. Existing equipment consisted largely of outdated models exhibiting low processing efficiency, and some units failed to meet current emission standards. Consequently, the procuring entity explicitly stipulated compliance with China VI emission standards, use of Dongfeng chassis for reliability assurance, and a wing-type (Yizhan) body design to facilitate on-site operations. Based on technical parameters of models such as CLW5080TWC6 documented in Chengli’s knowledge base, the Dongfeng Yizhan-style sewage treatment vehicle typically features a Dongfeng DOLICA chassis, engine power ranging from 120–160 hp, tank capacity of approximately 5–8 m³, and a wing-type design enabling rapid deployment of the working platform—ideal for narrow urban streets. Based on local procurement practices, the unit price for such vehicles is approximately RMB X million, keeping the total budget within the RMB X million ceiling. II. Emergency Tendering Process: Streamlined Procedures Focused on Core Criteria To address the urgent requirement, the department activated an emergency procurement green channel, significantly simplifying the tendering process: • Tender Announcement: Issued on June 20, 2025, clearly specifying requirements: Dongfeng chassis, wing-type design, sewage treatment capacity ≥80 m³/h, China VI emission compliance, and delivery timeline ≤30 days. • Bid Submission: Chengli submitted a complete bid package within three days of announcement, including official announcement documents for model CLW5080TWC6, financial statements, and reference cases (e.g., Wuhan Municipal Urban Management Bureau street-sweeping vehicle project). • Evaluation Criteria: Technical score (60%, covering announcement compliance, chassis brand, and superstructure configuration), price score (30%, subject to budget constraints), and delivery capability score (10%, assessed by production lead time). • Award Result: Chengli secured the contract with the highest comprehensive score, delivering five Dongfeng Yizhan-style sewage treatment vehicles at a unit price of approximately RMB X million (per publicly disclosed tender data). Chengli’s competitive advantages included its local manufacturing base in Suizhou, enabling zero-inventory shipment; standard models can be delivered within 7–15 days—well ahead of the 30-day deadline. Furthermore, th