Government procurement case of the Dongfeng D6 blue license plate sewage treatment truck in Weihai: Bid-winning solution and vehicle technical overview. In Q3 2024, a municipal sanitation department in a district of Weihai issued a public tender notice for blue license plate sewage treatment trucks to address recurring issues such as pipeline blockages in old residential communities and routine septic tank cleaning. Following multiple rounds of technical evaluation and commercial negotiations, Chengli Special Purpose Vehicle Co., Ltd. successfully delivered three units of its Dongfeng D6-based blue license plate sewage treatment truck (model CLW5070GSSD6), with a total contract value of approximately RMB 350,000–400,000 (based on publicly available tender information). This article provides an in-depth analysis of the project from perspectives including background, reasons for bid award, vehicle highlights, and reference insights for similar procurements. Project Basic Information Procuring Entity: Municipal Sanitation Department of a District in Weihai Project Scope: Three blue license plate sewage treatment trucks (including upper-body equipment and chassis) Budget Ceiling: Within RMB 477,000 (based on publicly available tender information) Winning Bidder: Chengli Special Purpose Vehicle Co., Ltd. Delivery Timeline: Within 15 working days after contract signing Vehicle Model: CLW5070GSSD6 (Dongfeng D6 chassis) Primary Applications: Septic tank cleaning, sewage transfer, sewer line unclogging This project represents a typical municipal sanitation emergency support procurement, imposing strict requirements on vehicle maneuverability, sealing performance, and emission standards. Given that operational areas are predominantly narrow streets and residential neighborhoods, blue license plate vehicles (drivable with a Class C1 driver’s license) were the preferred choice. Analysis of Chengli’s Bid-Winning Reasons According to publicly disclosed bid award notices and expert review records, Chengli Special Purpose Vehicle stood out in this tender primarily due to the following factors: Complete Official Announcement, Hassle-Free Registration: The CLW5070GSSD6 is fully listed in the MIIT’s official vehicle announcement database and complies with China VI emission standards, enabling seamless registration, annual inspection, and road transport permit issuance at local traffic management bureaus in Weihai. Compared to non-standard modified vehicles, Chengli’s products demonstrate superior regulatory compliance. Factory-Direct Sales, Outstanding Cost-Effectiveness: As a manufacturer based in Suizhou, Chengli quotes directly to procuring entities—eliminating intermediaries. Based on comparable configurations, Chengli’s quoted price is approximately RMB 9,100–17,100 lower per unit than dealer-channel quotations, delivering exceptional value within budget constraints. Short Delivery Cycle & Rapid Response: Chengli maintains a zero-inventory shipping capability; standard models can be produced and delivered within 7–15 days. For the Weihai project—which required delivery within 15 working days—Chengli leveraged its production capacity at the Suizhou base to complete delivery three days ahead of schedule. Comprehensive After-Sales Service System: Dongfeng chassis offers nationwide warranty coverage, while Chengli guarantees lifetime service for the upper-body equipment. For municipal authorities, 24-hour direct shipment of spare parts and localized service support significantly reduce long-term maintenance costs. Vehicle Technical Highlights: Dongfeng D6 Blue License Plate Sewage Treatment Truck The delivered vehicles are model CLW5070GSSD6, built on the Dongfeng D6 light-duty truck chassis. Key specifications and technical highlights are as follows: Item Specification/Configuration Chassis Model Dongfeng D6 (China VI) Emission Standard China VI Tank Capacity 3 m³ Maximum Suction Lift ≥6 m Sewage Pump Flow Rate ≥50 m³/h