Case Study and Bid-Winning Solution Analysis: Dongfeng Double-Cab Sewer Cleaning Truck (Blue License Plate, 3-cubic-meter Capacity) for Government Procurement in Tangshan City. In the municipal sanitation sector, sewer cleaning trucks serve as critical equipment ensuring smooth urban drainage system operations, and procurement demand is steadily increasing. In early 2026, a municipal sanitation department in Tangshan City publicly tendered for a batch of Dongfeng double-cab blue license plate 3-cubic-meter sewer cleaning trucks to address sediment removal tasks in aging urban pipeline networks. This article analyzes the procurement process, vehicle selection criteria, and Chengli Special Purpose Vehicle’s delivery solution based on this case, offering reference for similar projects. Project Background and Requirements Analysis This procurement originated from pre-flood season pipeline inspection work in a district of Tangshan City. According to publicly released tender information, the project budget was capped at approximately RMB 401,000, with plans to procure three blue license plate sewer cleaning trucks to meet sediment removal requirements on community branch roads and narrow alleys. Key requirements included: • Vehicles must comply with blue license plate driving license (Class C) standards to lower driver qualification thresholds; • Use of Dongfeng double-cab chassis to balance passenger and cargo capacity; • Tank volume of approximately 3 cubic meters, suitable for medium- and small-scale sediment removal tasks; • Equipped with high-pressure cleaning, suction, and self-discharge functions to enhance operational efficiency. Consistent with local procurement practices, the tendering authority imposed strict requirements regarding vehicle regulatory compliance (official announcement), after-sales service, and delivery timelines—ensuring vehicles are delivered and commissioned prior to the flood season. Interpretation of Chengli Special Purpose Vehicle’s Bid-Winning Solution Chengli Special Purpose Vehicle Co., Ltd. proposed a customized solution based on its CLW5070GSSD6 model to meet these requirements. Built upon the Dongfeng double-cab chassis and compliant with China VI emission standards, this model carries full official announcement documentation, enabling nationwide registration and annual inspection. Key highlights of the solution include: 1. Chassis and Body Configuration The chassis features a Dongfeng double-cab cab accommodating up to five occupants, ideal for team-based operations. The body comprises a stainless-steel tank with an approximate volume of 3 cubic meters, equipped with a high-pressure cleaning pump and suction system; maximum suction depth reaches up to 8 meters. Per MIIT announcement parameters (CLW5070GSSD6), the engine output is 85 kW, and the gross vehicle weight rating (GVWR) is 7 tons—fully compliant with blue license plate requirements. 2. Quotation and Cost-Effectiveness Based on publicly available tender data, Chengli’s unit price was approximately RMB 115,000 (tax-inclusive landed cost). Compared to equivalent models offered through authorized 4S dealerships, the direct factory sales model saved RMB 9,160–17,200 per unit. The total project budget remained within approximately RMB 395,000, meeting the tenderer’s financial constraints. 3. Delivery and After-Sales Service As a local manufacturer based in Suizhou, Chengli typically delivers standard models within 7–15 days. For this order, the factory pre-stocked units to enable zero-inventory shipment, completing delivery within 10 days. Regarding after-sales support: Dongfeng chassis coverage includes nationwide warranty service, while Chengli provides lifetime service for the superstructure and guarantees 24-hour direct dispatch of spare parts. Vehicle Performance Comparison and Data Table To assist procurement decision-making, key technical parameters of Chengli’s CLW5070GSSD6 are compared below against common competing models in t