Yichang Dongfeng D6 Blue-Plate Sewage Treatment Vehicle Government Procurement Case: In-Depth Analysis of Framework Agreement Procurement Background and Winning Bid Solution In spring 2025, a municipal sanitation department in Yichang launched a two-year framework agreement procurement project for sanitation vehicles, driven by urban drainage pipe network desilting and sewage treatment requirements. The department planned to introduce a batch of blue-plate sewage treatment vehicles through centralized procurement and phased delivery to address tasks such as septic tank cleaning in old residential communities and sewage transfer near rivers. Following open tendering and expert evaluation, Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as "Chengli") successfully qualified as a supplier with its Dongfeng D6 chassis-based CLW5070GSSD6 model and comprehensive after-sales service plan, subsequently delivering four units. This article reconstructs this real-world procurement case from four perspectives—framework agreement background, qualification process, order-triggering mechanism, and Chengli’s competitive advantages—to serve as a reference for municipal authorities nationwide. I. Framework Agreement Procurement Background: Why Choose Blue-Plate Sewage Treatment Vehicles? At the end of 2024, the municipal sanitation department included the upgrade of a batch of sewage treatment vehicles in its annual procurement plan, specifying their use for suction and transfer operations at community septic tanks, grease traps, and sewage wells. In accordance with the Interim Measures for the Administration of Framework Agreement Procurement Methods in Government Procurement, the department opted for a framework agreement approach to reduce repetitive tendering costs and ensure consistency in vehicle models and suppliers. During equipment selection, the technical team prioritized the advantages of blue-plate vehicles: drivers only require a Class C driver’s license; blue-plate vehicles are exempt from urban driving restrictions; and their overall length is under 6 meters, enabling flexible access to narrow streets. As a mainstream light-duty truck platform, the Dongfeng D6 chassis enjoys high market penetration and convenient maintenance support. When integrated with Chengli’s proprietary bodywork, the tank capacity reaches approximately 3.5–4 cubic meters—fully meeting single-operation volume requirements. Based on local procurement practices and publicly available tender information, the budget was capped at approximately RMB 100,000–120,000 per unit, ultimately designating the Dongfeng D6 blue-plate sewage treatment vehicle as the preferred solution. II. Qualification Process: From Tender Announcement to Qualification Review In February 2025, the department published the framework agreement procurement notice on the Yichang Public Resources Trading Platform, specifying the following supplier eligibility criteria: • Vehicles must possess complete MIIT (Ministry of Industry and Information Technology) announcements (e.g., CLW5070GSSD6), ensuring nationwide registration eligibility and annual inspection compliance; • Chassis must be backed by original manufacturer extended warranty commitments (nationwide Dongfeng chassis warranty); • Bodywork must include lifetime after-sales service and 24-hour direct spare parts dispatch capability; • Suppliers must demonstrate proven experience with similar projects (e.g., having served over 500 municipal sanitation units). Chengli promptly submitted its responsive documentation, including corporate credentials, product specifications, after-sales service commitments, and a verified case list (e.g., delivery records of four cleaning and suction-sewer trucks to Sichuan municipal authorities). Following scoring by the evaluation panel, Chengli ranked top in two key categories: "Technical Parameter Compliance" (maximum score 30 points; Chengli scored 28) and "After-Sales Service Plan