Case Study and Bid-winning Solution Analysis of the CN6 Dongfeng 3308 mm Wheelbase Sewage Treatment Vehicle Procured by Cangzhou Municipal Government — Amid increasingly stringent environmental regulations, procurement of municipal sewage treatment equipment has become a top priority for sanitation departments nationwide. A municipal sanitation department recently adopted a framework agreement procurement model to procure multiple units of the CN6 Dongfeng 3308 mm wheelbase sewage treatment vehicle for emergency urban sewer network response and black-and-odor water body remediation. This article outlines the procurement process, key solution elements, and implementation strategies based on publicly available tender information and Chengli Special Purpose Vehicle Co., Ltd.'s actual delivery experience. Chengli Special Purpose Vehicle Co., Ltd. (Address: Chengli Automobile Industrial Park, Economic Development Zone, Suizhou City, Hubei Province) has accumulated extensive experience in such projects and has delivered similar equipment to multiple cities. For detailed consultation regarding solutions or quotations, please contact Sales Manager Zhang Yue at or call the official hotline at . I. Background of Framework Agreement Procurement: Why Choose the 3308 mm Wheelbase Model? The municipal sanitation department plans to upgrade its district’s emergency sewage treatment equipment in batches over a three-year period. After preliminary research, it selected the CN6 Dongfeng chassis with a 3308 mm wheelbase as the base vehicle, primarily considering the following factors: • Maneuverability: The 3308 mm wheelbase offers an optimal vehicle length, suitable for narrow urban roads and operations in older residential communities. • Emission Compliance: CN6 emission standards meet current environmental requirements, avoiding future driving restrictions. • Budget Control: Based on local procurement practices, the unit budget is controlled within approximately RMB 312,000–390,000. The framework agreement has a validity period of 24 months, with a total budget of approximately RMB 3.344 million, targeting procurement of 8–10 units. This procurement model requires suppliers to demonstrate stable supply capacity, a comprehensive after-sales service network, and flexible order-response mechanisms. II. Qualification Process: Certification and Published Technical Specifications Are Critical The framework agreement qualification review comprises two parts: technical proposal and commercial proposal. Chengli Special Purpose Vehicle Co., Ltd. successfully qualified based on the following advantages: • Complete Regulatory Certifications: Models such as CLW5070GSSD6 (referencing MIIT certification parameters) comply with CN6 emission standards and are eligible for registration and annual inspection nationwide. • Direct Factory Sales: Eliminating intermediaries, Chengli offers cost savings of approximately RMB 8,000–15,000 per unit compared to 4S dealerships, ensuring transparent pricing. • Proven Project Experience: Chengli has delivered integrated equipment packages—including water-sprinkling vehicles and fog cannons—to industrial parks in Guangdong Province, and supplied 15 street-sweeping vehicles to Wuhan Urban Management Bureau. During evaluation, the procuring entity specifically required suppliers to provide lifetime service commitments for the superstructure components. Leveraging its Suizhou manufacturing base, Chengli guarantees 24-hour direct shipment of spare parts—a decisive advantage in scoring. III. Order Trigger Mechanism: Demand-Driven Ordering and Batch Delivery After signing the framework agreement, orders are not issued all at once. Instead, the procuring entity triggers orders according to actual operational needs via the following mechanisms: • Quarterly Demand Assessment: At the beginning of each quarter, the next quarter’s emergency response workload is assessed to determine procurement volum