Case Study and Contract Renewal Analysis of Jinan’s Government Procurement of Dongfeng Double-Cab Sewer Cleaning Truck (Blue License Plate, 3-cubic-meter Capacity) In 2022, a municipal sanitation department in one district of Jinan procured two units of the Dongfeng double-cab sewer cleaning truck (blue license plate, 3-cubic-meter capacity) via public tender to address urban drainage network desilting tasks. Two years later, due to excellent equipment performance, the unit renewed its contract in 2024, increasing procurement to five units and upgrading suction-sewage functionality. This article analyzes the vehicle selection rationale, user feedback, and renewal reasons based on authentic procurement records, offering reference for similar organizations. I. Background and Selection Rationale for Initial Procurement In 2022, the municipal sanitation department faced severe sediment accumulation in aging residential area drainage networks and low efficiency of manual desilting. Field surveys revealed narrow urban roads and numerous height restrictions, rendering conventional yellow-license-plate sewer cleaning trucks inoperable. Therefore, blue-license-plate vehicles (drivable with C1 driver’s license; gross vehicle weight ≤ 4.5 tons) were specified. After multiple rounds of comparative evaluation, the department selected the Dongfeng double-cab sewer cleaning truck (blue license plate, 3-cubic-meter capacity) manufactured by Chengli Special Purpose Vehicle Co., Ltd. (Announcement Model No.: CLW5040TQZD6). This model features a Dongfeng double-cab cab accommodating three operators, a tank with an effective volume of 3 cubic meters, and integrated high-pressure cleaning and suction-sewage systems—ideal for operations in confined roadways. According to publicly available tender information, the initial procurement unit price was approximately RMB 110,000, with total budget capped at RMB 280,000. II. Operational Performance and User Feedback Upon delivery, the two units were assigned to separate street-level operation teams. User feedback highlighted the following key points: • Excellent Maneuverability: The blue-license-plate configuration enables unrestricted access to aging residential areas and underground parking garages with height restrictions, improving operational efficiency by roughly fivefold compared to manual methods. • Operational Convenience: The double-cab design accommodates both the driver and two operators simultaneously, eliminating the need for additional transport vehicles. • High Durability: Equipped with an original Dongfeng chassis and a fully domestic Chaihe 95-horsepower engine compliant with China VI emission standards, the vehicle operated continuously for 200 hours without failure. • Reliable After-Sales Support: Chengli provides lifetime service for the superstructure; Dongfeng offers nationwide chassis warranty coverage; spare parts are shipped within 24 hours, with no downtime caused by part shortages. According to the head of the unit’s equipment division: “These two units have been in service for two years, requiring only routine maintenance and no major repairs. Compared with previously used models from other brands, Chengli’s tank sealing performance and suction stability are more reliable.” III. Analysis of the 2024 Contract Renewal Based on the positive experience from the initial procurement, the unit renewed its contract in 2024, expanding procurement to five units and upgrading suction-sewage capability (including a higher-capacity vacuum pump). Per standard procurement practice, the unit price decreased slightly due to volume purchasing, to approximately RMB 105,000, with the total budget capped at RMB 615,000. Key reasons for renewal include: • Growing Operational Demand: Increasing maintenance requirements for urban drainage networks rendered the original two units insufficient during peak workload periods. • Proven Equipment Reliability: Two years of operation confirmed low