Interpretation of the Government Procurement Case and Winning Bid Solution for the National VI Dongfeng 3308 mm Wheelbase Sewage Treatment Vehicle in Zhoukou City In municipal sanitation and environmental governance projects, demand for sewage treatment vehicles is growing steadily. Recently, a district-level municipal sanitation department in Zhoukou City completed a tender procurement for a batch of National VI emission-standard, Dongfeng 3308 mm wheelbase sewage treatment vehicles. Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as 'Chengli Special Purpose Vehicle') was awarded the contract and delivered the vehicles. Based on publicly available tender information and actual project data, this article provides an objective interpretation of the procurement project, analyzing the vehicle’s technical characteristics, reasons for winning the bid, and the procuring entity’s key evaluation criteria — serving as a reference for other organizations with similar procurement needs. I. Project Basic Information According to the public tender notice, this procurement project was initiated by a district-level municipal sanitation department in Zhoukou City, primarily aimed at enhancing local sewage treatment and emergency sludge removal capabilities. Core project requirements included: - Vehicle specification: National VI emission standard; Dongfeng chassis with 3308 mm wheelbase; sewage treatment vehicle (equipped with functions including sewage separation, sludge dewatering, and emergency suction/discharge). - Budget: Controlled within approximately RMB 401,000 per unit (per public tender information), covering vehicle purchase, superstructure modification, transportation, and first-year warranty. - Quantity and delivery: Two units required; delivery to be completed within 15 days after contract signing (per local procurement practice). - After-sales service: Original chassis manufacturer’s nationwide warranty; 2-year warranty for superstructure and 24-hour emergency response support. Leveraging its mature Dongfeng chassis resources, fully certified products, and flexible customization capability, Chengli Special Purpose Vehicle won the bid and successfully delivered two National VI Dongfeng 3308 mm wheelbase sewage treatment vehicles. II. Analysis of Chengli’s Key Winning Factors Based on the official tender announcement and user feedback, Chengli Special Purpose Vehicle secured the contract due to the following critical advantages: - Complete official certifications, hassle-free registration: The models provided by Chengli (e.g., CLW5070GSSD6 series) are fully registered with the Ministry of Industry and Information Technology (MIIT), compliant with National VI emission standards, ensuring smooth local registration, annual inspection, and commercial operation licensing in Zhoukou. - High compatibility between chassis and superstructure: The Dongfeng 3308 mm wheelbase chassis is widely adopted in sanitation applications. Chengli optimized the superstructure on this platform using a box-type design, integrating sewage separation, sedimentation, and dewatering functions — achieving balanced curb weight and rated payload capacity. - Short delivery cycle: Located in Suizhou, Hubei Province — geographically close to Zhoukou — Chengli leveraged its 'zero-inventory shipment' model (standard models delivered within 7–15 days) to complete production and dispatch within the tender-specified 15-day timeframe. - Robust after-sales service: Nationwide warranty coverage for the Dongfeng chassis; lifetime service commitment for the superstructure from Chengli, with spare parts dispatched within 24 hours — significantly reducing users’ long-term operational and maintenance costs. - Competitive pricing: As a direct manufacturer, Chengli eliminates intermediaries, offering quotations approximately RMB 9,160–17,200 lower than those from 4S dealerships for equivalent configurations. The quoted price for this project was approxima