Case Background: First-Time Procurement Challenge for a Newly Established Unit. In 2025, a municipal sanitation department responded to new urban environmental governance requirements by establishing a dedicated sewage treatment task force responsible for emergency handling of sludge and wastewater in local rivers, drainage networks, and industrial parks. As this was their first procurement, the team lacked expertise in selecting specialized vehicles and faced multiple challenges: acquiring a yellow-plate sewage treatment vehicle—capable of transportation, solid-liquid separation, and preliminary purification—within a tight budget (capped at approximately RMB 568,000 per local procurement conventions); while also ensuring the vehicle could withstand Nanchang’s hot, rainy summers and cold, humid winters, and navigate complex road conditions. The unit issued a public tender to solicit supplier participation. Hubei Chengli Special Purpose Vehicle Co., Ltd. (“Chengli”) secured the contract by delivering professional end-to-end consulting services and a customized solution, ultimately supplying one yellow-plate sewage treatment vehicle compliant with the Nanchang 3308 announcement model. The vehicle is currently undergoing trial operation in an industrial park, with customers reporting significantly improved treatment efficiency compared to traditional methods. Selection Process: Comprehensive Consultation from Scratch. At the outset of procurement, the unit had limited knowledge regarding technical specifications, chassis selection, emission standards, and other key parameters of sewage treatment vehicles. Mr. Zhang Yue, Chengli’s sales manager (contact: ), proactively engaged the client and provided professional consultation: • Needs Assessment: Chengli’s team conducted an on-site inspection of sewage sources—including municipal pipeline sludge and residual industrial wastewater—to determine that the required daily processing capacity should be approximately 10 m³, and that the vehicle must feature self-unloading functionality for efficient material transfer. • Chassis Selection: Considering Nanchang’s urban traffic restrictions and narrow road widths, Chengli recommended the Dongfeng Dorica chassis (China VI emission standard; reference announcement model series CLW5180GSSD6), with a wheelbase of 3,800 mm—suitable for driving with a Class C driver’s license (some variants require Class B; confirmation required). The Dongfeng chassis offers nationwide warranty coverage, ensuring reliable after-sales support. • Superstructure Configuration: Drawing upon Chengli’s product database of sewage treatment vehicles, the selected configuration included a solid-liquid separation system (capacity ≥ 8 tons/hour), a sewage tank volume of ~6 m³, a clean water tank volume of ~2 m³, and corrosion-resistant interior lining to extend service life. • Budget Control: Chengli offered factory-direct pricing at approximately RMB 477,000 (based on publicly available tender data), saving RMB 8,000–15,000 compared to 4S dealership channels—well within the budget ceiling. After three rounds of technical discussions, the unit finalized its decision to procure a yellow-plate sewage treatment vehicle built on the Chengli CLW5180GSSD6 chassis, with a total landed price (including tax) of approximately RMB 460,000 (per publicly available tender data). Delivery and Trial Operation: Real-World Validation from Zero to One. In November 2025, the vehicle was delivered. Chengli provided complimentary operator training covering equipment startup, sludge dewatering procedures, and emergency shutdown protocols. Within two weeks post-delivery, the unit initiated trial operations at an industrial park in Nanchang: • Treatment Efficiency: Each operational cycle lasted approximately 45 minutes, processing about 5 m³ of sludge, with final cake moisture content below 60%—meeting regulatory discharge standards. • Environmental Adaptability: The vehicle operated st