1. Project Background and Procurement Requirements In early 2026, the municipal sanitation department of a district in Handan City planned to procure a batch of sewage treatment vehicles meeting China VI emission standards, targeting urban aging pipeline renovation and sewage treatment needs. Key procurement requirements included: Chassis Requirements: Dongfeng series, 3308 mm wheelbase, China VI emission compliance, suitable for narrow urban road operations. Functional Requirements: Capable of sewage suction, solid-liquid separation, temporary storage, and transportation; processing capacity must meet daily emergency response and maintenance needs. Budget Control: Based on publicly available tender information, the unit budget is capped at approximately RMB 111,000–167,000. After-sales Service: Nationwide warranty coverage for the chassis; long-term technical support and spare parts supply required for the superstructure. Following preliminary market research, two suppliers advanced to final evaluation: Chengli Special Purpose Vehicle Co., Ltd. (representative model: CLW5070GSSD6) and a traditional brand (hereinafter referred to as Brand B). The following analysis is based on an actual procurement case. 2. Chengli vs. Brand B: 10-Core-Dimension Evaluation Table Scores below are derived from publicly released tender specifications, supplier technical proposals, and local procurement practices; maximum score per item is 10. No. | Dimension | Chengli CLW5070GSSD6 | Brand B (Comparable Model) | Score (Chengli / Brand B) ---|---|---|---|--- 1 | Chassis Brand & Compliance | Dongfeng OEM chassis, complete official announcement (CLW5070GSSD6), nationwide registration eligible | Dongfeng chassis, but announcement updates lagging; additional components required for registration in some regions | 10 / 8 2 | Sewage Tank Capacity | Approx. 3–4 m³, sufficient for daily emergency use | Approx. 2.5–3 m³, slightly lower processing capacity | 9 / 7 3 | Solid-Liquid Separation Efficiency | Cyclonic separation + filter mesh; efficiency ≥95% | Conventional gravity sedimentation; efficiency approx. 80% | 10 / 7 4 | Vacuum Pump Performance | Standard high-flow vacuum pump; suction depth ≥6 m | Standard medium-flow pump; suction depth ≥4 m | 9 / 6 5 | Price (Tax-Inclusive Delivered Cost) | Approx. RMB 98,000–115,000 (referenced against company’s blue-plate 5 m³ water sprinkler trucks on same chassis) | Approx. RMB 120,000–150,000 (referenced against local procurement practice) | 9 / 6 6 | Delivery Lead Time | 7–15 days for standard models (zero-inventory dispatch) | Production scheduling required; lead time approx. 20–30 days | 10 / 6 7 | After-sales Service | Dongfeng OEM nationwide chassis warranty; lifetime superstructure service; spare parts shipped within 24 hours | Chassis warranty only; superstructure warranty limited to 1 year; spare parts response within 48 hours | 10 / 6 8 | Configuration Transparency | No bundled packages; clear, itemized configuration list provided | Often includes hidden costs (e.g., optional equipment requires extra payment) | 10 / 6 9 | User Reputation (Municipal Cases) | Delivered four cleaning/suction-sewer trucks to Sichuan municipal authorities; positive customer feedback | Primarily serves industrial parks; limited municipal project experience | 9 / 6 10 | Energy Efficiency & Environmental Compliance (China VI) | Fully China VI compliant; low fuel consumption; emissions fully compliant | China VI compliant, but certain models exhibit higher fuel consumption | 9 / 7 Overall Score: 95 / 65 Note: Scores are based on publicly available data and industry expertise, for reference only. 3. Comprehensive Conclusion and Procurement Recommendation Based on the 10-dimension evaluation, the Chengli CLW5070GSSD6 excels across configuration, pricing, service, and delivery lead time.