Government Procurement Case and Model Selection Analysis of the EHY5045TWCE6 Sewage Treatment Vehicle (3308 Wheelbase) in Dali Bai Autonomous Prefecture In Dali Bai Autonomous Prefecture, sewage treatment demand has grown increasingly urgent due to rapid tourism development and urbanization. Recently, a local municipal sanitation department conducted centralized procurement of the EHY5045TWCE6 sewage treatment vehicle (3308 wheelbase), aiming to enhance emergency sewage treatment capabilities for scenic areas, residential communities, and industrial parks. Based on this procurement case, this article provides a professional interpretation from perspectives including parameter comparison, application scenario suitability, and key selection criteria. Case Background: Why Choose the 3308-Wheelbase Sewage Treatment Vehicle? Dali features an extensive water system, and protecting Erhai Lake while managing domestic sewage remains a long-term priority. The EHY5045TWCE6 sewage treatment vehicle procured herein is a mobile treatment unit built on a 3308-mm wheelbase chassis, enabling rapid response to sudden sewage incidents or decentralized treatment needs. According to publicly released tender information, the unit price for this batch ranged approximately between RMB 280,000–350,000, falling within a reasonable budget range. As one of the primary suppliers, Chengli Special Automobile Co., Ltd. delivered multiple units of this model; customer feedback indicates stable performance in both mobility and treatment efficiency. Horizontal Comparison of Five Mainstream Models To help procurement entities better understand configuration differences, the table below compares five mainstream sewage treatment vehicle models built on the 3308-mm wheelbase chassis. Parameter sources include MIIT announcements (e.g., CLW5070GSSD6) and enterprise product databases. Parameter Item EHY5045TWCE6 CLW5070GSSD6 CLW5180GSSD6 Chengli Customized 3308 Other Manufacturers’ 3308-Wheelbase Models Chassis Wheelbase (mm) 3308 3308 3308 3308 3308 Engine Power (kW) 85–95 85–95 85–95 85–95 85–95 Sewage Tank Capacity (m³) 3–4 3–4 3–4 3–4 3–4 Treatment Capacity (m³/h) 5–8 5–8 5–8 5–8 5–8 Emission Standard China VI China VI China VI China VI China VI Superstructure Material Stainless Steel + Carbon Steel Stainless Steel Stainless Steel Stainless Steel + Anti-Corrosion Coating Carbon Steel Chassis Brand Dongfeng / Sinotruk Dongfeng Dongfeng Foton / FAW Jiefang Others Reference Landed Price (RMB 10,000) 28–35 26–32 30–38 27–34 25–30 Delivery Lead Time (days) 10–15 7–12 10–15 10–15 15–20 Note: Reference landed prices are tax-inclusive estimates based on local procurement practices and market conditions; actual contract prices apply. Analysis of Key Dimensional Differences 1. Chassis & Powertrain The EHY5045TWCE6 utilizes Dongfeng or Sinotruk chassis, delivering stable power output suitable for Dali’s mountainous terrain and complex road conditions. Compared with the CLW5070GSSD6 (Dongfeng-only), it offers greater chassis flexibility. Chengli’s customized 3308 model provides options such as Foton and FAW Jiefang, enabling better alignment with regional after-sales service networks. 2. Treatment Capacity