I. Project Background and Procurement Requirements In Q3 2025, the municipal sanitation department of a district in Huanggang City, Hubei Province, launched a centralized procurement initiative for sludge removal vehicles, primarily intended for cleaning silt from urban drainage networks, culverts, and river channels. The project budget was capped at RMB 286,000, with plans to procure two Dongfeng single-cab blue license plate sludge removal trucks (5 m³ capacity, equipped with high-pressure cleaning function). This model was selected as the core requirement due to its blue license plate eligibility (drivable with Class C driver’s license), unrestricted urban access, compact overall dimensions, and suitability for operations in older urban areas and narrow alleys. According to publicly released tender information, the procuring entity specified clear technical requirements for the vehicles: the chassis must feature a Dongfeng single-cab cab; the engine must comply with China VI emission standards; the tank volume must be no less than 5 m³; and the vehicle must be equipped with both a high-pressure cleaning system (operating pressure ≥16 MPa) and a vacuum sludge suction system (suction depth ≥6 meters). Bidders were required to submit complete MIIT (Ministry of Industry and Information Technology) announcement parameters, after-sales service commitments, and performance records from similar projects completed within the past three years. Ultimately, Chengli Special Purpose Vehicle Co., Ltd. successfully delivered two units, leveraging its mature CLW5070GSSD6 model (MIIT announcement number referenced in the official directory) and tailored solution adjustments. These vehicles are now operational in Huanggang, with customer feedback highlighting stable upper-structure performance and seamless switching between high-pressure cleaning and vacuum suction functions—effectively resolving previous inefficiencies and poor working conditions associated with manual sludge removal. II. Cross-Regional Replicable Solution: Lessons Learned from Huanggang to Surrounding Cities Following successful delivery of the Huanggang project, municipal sanitation departments in neighboring cities—including Ezhou and Xianning—began expressing interest in similar sludge removal vehicles. Drawing upon Chengli’s extensive nationwide delivery experience (e.g., four high-pressure cleaning & vacuum suction trucks supplied to municipal authorities in Sichuan), we observed that the primary challenge in cross-regional procurement lies not in the vehicle itself, but rather in localized model selection and policy compliance. Below are key elements of the standardized 'cross-regional replicable' solution distilled from the Huanggang case: Chassis Selection: Dongfeng single-cab chassis enjoy high market penetration across Hubei, Henan, and Sichuan provinces, supported by dense maintenance networks and low after-sales service costs. Chengli offers nationwide extended warranty coverage for Dongfeng chassis, lifetime after-sales support for the upper-structure assembly, and 24-hour direct shipment of spare parts—addressing concerns commonly associated with out-of-province procurement. Regulatory Compliance: As specialized sanitation vehicles, sludge removal trucks require full MIIT announcement approval to ensure nationwide registration, annual inspection, and commercial operation eligibility. All Chengli models—including the CLW5070GSSD6—are officially listed in the MIIT directory; the blue license plate 5 m³ variant is eligible for registration in all regions across China, including quota-controlled cities such as Beijing and Shanghai. Budget Benchmarking: Based on the Huanggang project experience, the reference landed price for a blue license plate 5 m³ sludge removal truck (with high-pressure cleaning capability) ranges from RMB 121,000 to 143,000 per unit (inclusive of tax, insurance, and registration fees). Compared to 4S dealership channels, Chengli’s fact