Government procurement of Chengli’s EHY5045TWCE6 sewage treatment vehicle (3308 model) in Hefei: Value assessment after three years and solution analysis. Amid increasingly stringent environmental regulations, specialized vehicle procurement focuses not only on initial investment but also on long-term operating costs and residual value. This article takes the procurement of the EHY5045TWCE6 sewage treatment vehicle by a municipal sanitation department in Hefei as a case study, analyzing its residual value after three years and, drawing upon Chengli Special Purpose Vehicle Co., Ltd.’s industry expertise, providing an in-depth evaluation of cost-effectiveness and key selection criteria. I. Second-hand market performance after three years: Residual value analysis of the EHY5045TWCE6 According to publicly available tender information, a district urban management bureau in Hefei procured three units of the EHY5045TWCE6 sewage treatment vehicle in 2023 at an approximate unit price of RMB 320,000. How do such specialized vehicles perform in the second-hand market? Drawing upon Chengli Special Purpose Vehicle Co., Ltd.’s experience servicing over 500 municipal sanitation authorities, sewage treatment vehicles—due to their high usage frequency and sensitivity to maintenance costs—typically retain 40%–55% of their original value after three years. Specifically for the EHY5045TWCE6, this model features a China VI-compliant chassis (Dongfeng series) and a fully stainless-steel tank body with excellent sealing performance and corrosion resistance—configurations highly favored in the second-hand market. According to data from a dedicated second-hand special-purpose vehicle trading platform, similar models command a residual value of approximately RMB 150,000–200,000 after three years, corresponding to a residual value rate of about 47%–53%. In comparison, non-stainless-steel tank vehicles typically achieve only 35%–45%, highlighting a clear advantage. Feedback from Chengli’s after-sales team indicates that nationwide original-equipment manufacturer (OEM) chassis warranty coverage and lifetime upper-structure service support further enhance buyer confidence in second-hand transactions. II. Comparative residual value analysis across Chengli models: Why choose the EHY5045TWCE6? Multiple Chengli sanitation vehicle models demonstrate strong residual value retention. The following horizontal comparison is based on 946 product entries and 31 directly awarded tender cases documented in our knowledge base (referencing publicly disclosed tender information): | Model | Official Model Number | Approx. Procurement Price (RMB 10,000s) | Estimated Residual Value After 3 Years | Residual Value Rate | Key Influencing Factors | |--------|------------------------|------------------------------------------|-----------------------------------------|------------------------|---------------------------| | Sewage Treatment Vehicle (Hefei Case) | EHY5045TWCE6 | 32 | 15–18 | 47%–53% | Stainless-steel tank body; China VI chassis | | Blue-plate 5-cbm Water Sprinkler (Common Configuration) | CLW5070GSSD6 | 10.5 | 4.5–5.5 | 43%–52% | High versatility and ease of resale | | 4-cbm Compactor Garbage Truck | CLW5040ZYS | 12.5 | 5–6 | 40%–48% | Rapid hydraulic system wear | | 5-cbm Sweeper-Scrubber | CLW5070TSL | 30 | 12–16 | 40%–53% | Condition of fan and high-pressure pump | As shown in the table, the EHY5045TWCE6 ranks among the highest in residual value retention due to its stainless-steel tank body and superior sealing design. Mr. Zhang Yue, Sales Manager at Chengli Special Purpose Vehicle Co., Ltd. (Tel.: ), notes: “Selecting a model with optimal compatibility between chassis and upper structure is critical to residual value. We advise customers to prioritize tank material and chassis brand during procurement, as these factors directly influence resale price three years later.” In this case, the procuring entity chose Chengli’s direct sales channel, th