Yantai EHY5045TWCE6 Sewage Treatment Vehicle (3,308 mm wheelbase) Government Procurement Case: Comparative Analysis of Standard vs. Premium Configuration Lists and Transparent Pricing — 2025. A municipal sanitation department in Yantai City publicly tendered for a sewage treatment vehicle to address emergency needs in urban sewer networks. After multiple rounds of technical evaluation and price comparison, Chengli Special Purpose Vehicle Co., Ltd.’s EHY5045TWCE6 model was selected and delivered. This article dissects the configuration selection logic, value assessment of optional equipment, and the practical significance of Chengli’s transparent pricing. I. Project Background and Procurement Requirements The municipal sanitation department is responsible for maintaining the sewage pipeline network in a district of Yantai City, routinely handling suction and solid–liquid separation from septic tanks, grease traps, and small-diameter sewage wells. Key procurement requirements included: compliance with China VI emission standards; integrated capabilities for sewage suction, separation, and storage; and sufficient maneuverability to navigate urban low-clearance roadways. Following an open tender process, Chengli’s EHY5045TWCE6 sewage treatment vehicle secured the contract at a unit price of approximately RMB 330,000 (based on publicly available tender information). The vehicle has been operational for nearly six months post-delivery, with client feedback highlighting “stable operation and high separation efficiency.” II. Comparison of Standard vs. Premium Configuration Lists Per Chengli’s product database, the EHY5045TWCE6 is offered in two configurations: Standard and Upgraded. Below is a comparative table derived from MIIT announcement parameters (e.g., analogous models such as CLW5180GSSD6) and actual delivery data: Configuration Item | Standard Version (Base Configuration) | Premium Version (Optional Upgrade) ---|---|--- Chassis Model | 3,308 mm wheelbase; Dongfeng or Sinotruk chassis (China VI compliant) | 3,308 mm wheelbase; Dongfeng or Sinotruk chassis (China VI compliant) Sewage Tank Capacity | Approx. 5 m³ | Approx. 6 m³ Suction Pump | Conventional vacuum pump; max. suction depth ≤ 7 m | High-power vacuum pump; max. suction depth ≥ 9 m, anti-clogging design Solid–Liquid Separation System | Screw extrusion type; processing capacity: 8 m³/h | Pre-screening + screw extrusion system; processing capacity: 12 m³/h Discharge Method | Manual discharge valve | Dual-mode (electric + manual) discharge valve Control System | Manual control panel | PLC automatic control + manual dual-mode operation Auxiliary Functions | None | High-pressure cleaning gun (15 m retractable hose), LED lighting for nighttime operations Reference Price (Tax-Inclusive, Delivered) | Approx. RMB 300,000–330,000 | Approx. RMB 350,000–380,000 Typical Application Scenarios | Routine septic tank cleaning, small-diameter sewage well maintenance | Emergency response, high-load continuous operation, complex working conditions Note: Above pricing reflects Chengli’s 2026 tax-inclusive delivered prices and local procurement conventions; actual contract terms apply. III. Value Analysis of Optional Equipment In this case, the procuring entity adopted a “Standard Version + Selective Options” approach—retaining the standard vacuum pump and manual control system, while adding a high-pressure cleaning gun (approx. RMB 8,000) and electric discharge valve (approx. RMB 5,000). Rationale for these selections: High-Pressure Cleaning Gun Value: Urban sewage wells are frequently clogged by grease or debris; the high-pressure cleaning gun enables on-site pipe clearance, reducing secondary operations and boosting per-job efficiency by ~30%. Electric Discharge Valve Value: Manual discharge requires operators to exit the cab—posing safety and ergonomic challenges in winter (e.g., frostbite risk, time inefficiency); the electric valve allows remote discharge from inside the cab.