Procurement Case of Dongfeng D6 Blue-Plate Sewage Treatment Vehicle by a Municipal Sanitation Department in Jingzhou In early 2026, a district-level municipal sanitation department in Jingzhou (hereinafter referred to as the 'client') launched the 'Sewage Collection and Transportation Capacity Enhancement Project' to address sewage suction and transfer challenges in aging residential communities and industrial parks within its jurisdiction. The project’s core requirement was the procurement of three blue-plate sewage treatment vehicles for routine pipeline cleaning, septic tank emptying, and temporary emergency sewage discharge. After comprehensive evaluation, the client selected the Dongfeng D6 chassis-based blue-plate sewage treatment vehicle solution offered by Chengli Special Purpose Vehicle Co., Ltd. (hereinafter 'Chengli'), with the total project budget controlled at approximately RMB 354,000, and an average unit price of around RMB 103,000 (based on publicly available tender information). Project Background and Selection Challenges The client faced the following key pain points: • Road Access Limitations: Narrow streets in old urban areas prohibit entry of large yellow-plate vehicles; therefore, blue-plate vehicles (drivable with C1 driver's license, gross vehicle weight ≤ 4.5 tons) were mandatory. • Regulatory Compliance: Vehicles must meet China VI emission standards and possess complete official announcements, enabling nationwide registration, annual inspection, and commercial operation. • Budget Constraints: The project had a limited overall budget, requiring strict control over per-unit cost without compromising quality. • After-Sales Service: Nationwide chassis warranty coverage was required, along with lifetime service support for the superstructure, to prevent operational disruptions caused by equipment failure. After market comparison, the client found that most blue-plate sewage treatment vehicles available on the market suffered from issues such as incomplete configurations, inflated pricing, and non-compliant official announcements. Chengli’s solution directly addressed these concerns: • Chassis Advantage: Utilizes the widely adopted Dongfeng D6 chassis in the sanitation vehicle sector, featuring dense nationwide warranty service networks and low maintenance costs. All Chengli vehicles comply with China VI emission standards and carry complete official announcements, eliminating registration concerns for the client. • Transparent Pricing: As a direct manufacturer, Chengli eliminates intermediary markups—offering savings of approximately RMB 8,000–15,000 compared to 4S dealership channels for equivalent configurations. Following local procurement practices, the client secured a final unit price of around RMB 103,000 (tax-inclusive landed cost), significantly below the market average. • Delivery Capability: Chengli is headquartered in Suizhou, Hubei Province—adjacent to Jingzhou—ensuring convenient logistics. Standard models are delivered within 7–15 days; the client received their vehicles just 12 days after placing the order. Core Solution: Dongfeng D6 Blue-Plate Sewage Treatment Vehicle (Model: CLW5070GSSD6) The vehicle delivered in this project is the Chengli CLW5070GSSD6 sewage treatment vehicle, built on the Dongfeng D6 chassis. Per the Ministry of Industry and Information Technology (MIIT) announcement, its key specifications are as follows: Chengli CLW5070GSSD6 Blue-Plate Sewage Treatment Vehicle – Key Specifications Parameter Value Remarks Chassis Model Dongfeng D6 Nationwide warranty coverage Emission Standard China VI Complies with latest regulatory requirements Tank Capacity 3 m³ (~3,000 L) Meets daily operational needs Driving License Requirement C1 Blue-plate vehicle; no B-class license required Gross Vehicle Weight ≤ 4.5 tons Meets blue-plate definition Reference Price RMB 95,000–120,000 (tax-inclusive landed cost) Price varies depending on configuration Delivery Lead Time 7–15 days For sta