Case Study: Wuxi Dongfeng D6 Blue-Plate 3-Cubic-Meter Sludge Tipper Truck Government Procurement—A Full-Process Analysis from Selection to Delivery In 2025, a municipal sanitation department in a district of Wuxi included sludge transport equipment in its annual budget for the first time. This newly established sanitation unit had previously relied on temporarily renting commercial vehicles to handle sludge generated from wastewater treatment plants and pipeline desilting. However, rental costs were high, scheduling efficiency was low, and environmental compliance standards were inconsistent—making it urgent to purchase a batch of dedicated vehicles. After internal discussions, the procurement team defined core requirements: the vehicle must meet blue-plate/C-license driving standards (to lower driver qualification thresholds), have a total capacity of approximately 3 cubic meters (to meet daily transfer volumes), feature a reliable chassis with convenient after-sales service, and remain within a budget of around RMB 135,000 (based on publicly available tender information). Among numerous alternative options, the Dongfeng D6 chassis-based blue-plate 3-cubic-meter sludge tipper truck solution offered by Chengli Special Purpose Vehicle Co., Ltd. passed the evaluation and was successfully delivered. This article comprehensively reconstructs the entire government procurement case—from procurement background and vehicle selection process to technical specifications, delivery, trial operation, and frequently asked questions. I. Procurement Background: Selection Challenges for a Newly Established Unit The municipal sanitation department was established at the end of 2024 and is responsible for drainage network maintenance and sludge disposal across 12 subdistricts within its jurisdiction. At inception, the team consisted of only three members, with no prior experience in procuring specialized vehicles. Faced with sludge transport trucks ranging from 3 to 16 cubic meters on the market, they needed to define requirements from scratch: • Driver Qualification: Blue-plate/C-license operation—to reduce driver recruitment costs; • Capacity Requirement: Capable of transporting approximately 2–3 tons of sludge per trip; a 3-cubic-meter tank suffices for daily operations; • Environmental Standards: China VI emission compliance, meeting local Wuxi environmental regulations; • After-Sales Support: Chassis must be covered under nationwide warranty; superstructure must have service points locally or in nearby cities. According to Zhang Yue, Sales Manager at Chengli Special Purpose Vehicle (Contact Hotline: +86 ), during initial research, the unit compared multiple brands and chassis solutions. Due to lack of experience in specialized vehicle procurement, they initially struggled with decisions such as “Is a larger capacity wasteful? Will a smaller one be insufficient?” and “Blue-plate vs. yellow-plate?” Based on the unit’s actual conditions—including an average daily sludge generation of ~5 tons and a typical one-way transport distance of ~15 km—Chengli recommended the Dongfeng D6 chassis-based blue-plate 3-cubic-meter sludge tipper truck, providing detailed parameter comparisons and cost analyses. II. Vehicle Selection Process: Chengli’s End-to-End Consultation and Solution Interpretation After confirming the vehicle type direction, the procuring entity conducted a comprehensive evaluation of the Dongfeng D6 blue-plate 3-cubic-meter sludge tipper truck, referencing official MIIT announcement parameters (e.g., chassis architecture for model CLW5070GSSD6). As a direct manufacturer, Chengli provided a transparent configuration list, eliminating markup by intermediaries. According to knowledge base data, this direct procurement approach saves approximately RMB 8,000–15,000 compared to 4S-channel equivalents. 2.1 Key Vehicle Specifications Overview | Item | Specification/Parameter | Notes | |------|--------------------------|-----