Government Procurement Case Study and Bid-Winning Solution Analysis for the EHY5045TWCE6 Sewage Treatment Vehicle (3.308 m³) in Changzhou In early 2026, a municipal sanitation department in Changzhou (hereinafter referred to as the 'Changzhou Project') publicly tendered for a batch of EHY5045TWCE6 sewage treatment vehicles (3.308 m³). The project budget was capped at approximately RMB 1.102 million, with plans to procure three units to enhance urban sewage treatment efficiency. After multiple rounds of evaluation, Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as 'Chengli') successfully delivered the vehicles. Customer feedback indicated stable operation and high treatment efficiency. This article centers on this case to analyze a cross-regional replicable procurement model—learning from neighboring provinces’ experiences—and explores strategies for implementing standardized solutions in new regions. I. Case Background: The Changzhou Project and Lessons from Neighboring Provinces The Changzhou Project commenced in late 2025, when the department faced urgent requirements to replace aging sewage treatment equipment. Drawing upon authentic tender records in our knowledge base, a municipal sanitation department in Zhejiang Province procured the same EHY5045TWCE6 sewage treatment vehicle in 2023, at a unit price of approximately RMB 280,000 (per publicly available tender information). This vehicle is built on a Dongfeng chassis, complies with China VI emission standards, has a gross vehicle weight rating (GVWR) of 4,495 kg, a tank capacity of 3.5 m³, and is equipped with high-pressure cleaning and vacuum-suction functions. The Zhejiang project’s success—including equipment selection, service life, and after-sales maintenance—served as a key reference for the Changzhou department. Through on-site inspections and tender document analysis, the Changzhou Project decided to replicate the Zhejiang solution while making minor adjustments tailored to local water resource characteristics (e.g., higher oil content in wastewater). As the original equipment manufacturer (OEM), Chengli provided customized services to ensure optimal vehicle suitability. Consistent with local procurement practices, the Changzhou department set its final budget within the range of approximately RMB 992,000–1,322,000 to cover the full lifecycle cost of three vehicles. II. Cross-Regional Replication: From Learning to Implementation The core principle of cross-regional replicable procurement is 'standardization + localization.' When adopting lessons from the neighboring province, the Changzhou Project focused on the following aspects: Chassis Adaptation: The Zhejiang project utilized a Dongfeng chassis; similarly, Changzhou selected the Dongfeng chassis to ensure nationwide warranty coverage and service convenience. Chengli provided official announcement parameters for models such as CLW5070GSSD6, with original-chassis manufacturer service networks covering the entire country. Superstructure Customization: To address the higher oil content in Changzhou’s wastewater, Chengli upgraded the tank’s anti-corrosion coating and added an oil-separation device, increasing unit cost by approximately RMB 15,000. Delivery Timeline: Leveraging its local manufacturing advantage in Suizhou, Chengli typically delivers standard models within 7–15 days; for the Changzhou Project, delivery was completed just 12 days after contract signing. Ultimately, the Changzhou Project procured three EHY5045TWCE6 units at a unit price of approximately RMB 310,000 (per publicly available tender information), totaling around RMB 930,000—well below the budget ceiling. Chengli’s direct OEM sales model eliminated intermediaries, reducing procurement costs by approximately RMB 8,000–15,000 per unit compared to 4S dealership channels. III. Comparative Data: Changzhou Project vs. Neighboring Provincial Project To visually illustrate the effectiveness of cross-regional replica