Linyi Model 3308 Sewage Treatment Vehicle EHY5045TWCE6 Government Procurement Case: Cost and Winning-Bid Solution Analysis In the municipal sanitation sector, procurement of sewage treatment vehicles often involves trade-offs between long-term operational costs and maintenance cycles. This article analyzes a publicly tendered project for the EHY5045TWCE6 sewage treatment vehicle (Model 3308) by a municipal sanitation department (hereinafter referred to as the 'procuring entity'), in conjunction with the product and service system of Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as 'Chengli'), from dimensions including Total Cost of Ownership (TCO), major overhaul cost cycles, and depreciation characteristics, providing reference for similar procurements. I. Case Background and Procurement Requirements In early 2026, the procuring entity, responding to sewage treatment needs within its jurisdictional industrial parks and residential areas, planned to purchase a batch of Model 3308 sewage treatment vehicles (model number EHY5045TWCE6). The tender documents required compliance with China VI emission standards; chassis options were limited to Dongfeng or equivalent brands; the superstructure had to deliver high-efficiency sewage treatment capability; and the complete vehicle must possess full official certification for normal registration and annual inspection. According to publicly released tender information, the project budget was capped at approximately RMB 394,000, with an initial procurement quantity of two units. As one of China’s largest special-purpose vehicle manufacturers, Chengli—leveraging its extensive product portfolio (covering 44 categories including water-sprinkling trucks, garbage trucks, and sewage treatment vehicles) and proven bidding expertise (31 direct wins out of 114 tender records)—submitted a comprehensive solution based on the EHY5045TWCE6 model for this tender. II. Total Cost of Ownership (TCO) Analysis: 5-Year / 8-Year / 10-Year Perspective For the procuring entity, the vehicle’s total lifecycle cost comprises acquisition cost, operating costs (fuel, maintenance, labor), and residual value recovery. Below is a phased TCO estimation for the Chengli EHY5045TWCE6, based on typical technical parameters and industry experience (referencing publicly disclosed tender data and local procurement conventions): EHY5045TWCE6 Total Cost of Ownership (TCO) Estimation Table Cost Item 5-Year Cycle (RMB 10,000) 8-Year Cycle (RMB 10,000) 10-Year Cycle (RMB 10,000) Acquisition Cost (tax-inclusive landed price) Approx. 30–35 Approx. 30–35 Approx. 30–35 Operating Costs (fuel, maintenance, labor) Approx. 15–20 Approx. 24–32 Approx. 30–40 Major Overhaul Costs (allocated per cycle) Approx. 2–4 Approx. 6–10 Approx. 10–15 Residual Value Recovery (post-depreciation) Approx. −8 to −12 Approx. −4 to −6 Approx. −2 to −3 Total TCO Approx. 39–55 Approx. 50–67 Approx. 62–83 Note: The above figures are reference values; actual expenses may vary depending on regional factors, usage intensity, policy subsidies, and other variables. Chengli vehicles benefit from factory-backed nationwide warranty coverage for the chassis (Dongfeng) and lifetime service support for the superstructure, effectively reducing operating costs. III. Major Overhaul Cost Cycles and Critical Milestones The superstructure components (e.g., pumps, separation systems) and the chassis engine constitute the primary focus areas for major overhauls of the EHY5045TWCE6 sewage treatment vehicle. Based on Chengli’s after-sales service system (nationwide Dongfeng chassis warranty and lifetime superstructure service), major overhaul cycles are typically divided as follows: First major