Langfang Municipal Government Procurement Case of Dongfeng Double-Cab Sewage Suction Truck (Blue License Plate, 3 m³): A Comprehensive Analysis from Resale Value to Winning Bid Proposal. In a public tender conducted in 2025 by a municipal sanitation department in Langfang City, the Dongfeng double-cab sewage suction truck (blue license plate, 3 m³) emerged as a focal point. The procuring entity explicitly required core specifications including blue license plate eligibility (drivable with Class C driver’s license), 3 m³ tank capacity, Dongfeng chassis, and double-cab configuration, with a budget capped at approximately RMB 169,000–203,000 (per publicly available tender information). Ultimately, Chengli Special Purpose Vehicle Co., Ltd. secured the contract leveraging advantages such as factory-direct sales, full compliance with national vehicle announcements, and robust after-sales support, delivering multiple units of this model—now deployed across several subdistrict-level environmental maintenance units in the region. This article uses this procurement case as a benchmark to deeply analyze the winning bid proposal for the Dongfeng double-cab sewage suction truck (blue license plate, 3 m³), with special emphasis on resale value—a critical yet often overlooked dimension in municipal procurement decisions. I. Second-Hand Market Price After 3 Years: The 'Residual Value Code' for Sewage Suction Trucks. For municipal sanitation departments, vehicle procurement is not merely a one-time capital expenditure but also requires forward-looking planning for asset disposal over the next 3–5 years. According to market research and procurement feedback collected by Chengli Special Purpose Vehicle Co., Ltd. across multiple regions, the Dongfeng double-cab sewage suction truck (blue license plate, 3 m³)—referencing the CLW5070GSSD6 series (as per official vehicle announcement parameters)—typically retains 55%–65% of its original purchase price after three years of normal operation. Taking the current procurement unit price of approximately RMB 160,000 as an example, the estimated residual value after three years would be RMB 88,000–104,000. This resale value significantly outperforms non-standard modified vehicles in the same category (which typically depreciate by over 60% within three years), primarily due to the following factors: • Nationwide Dongfeng Chassis Warranty: As the core component determining resale value, the Dongfeng chassis enjoys strong market liquidity and readily available spare parts. • Blue License Plate Advantage: Eligibility for Class C driver’s license operation broadens the pool of potential second-hand buyers (e.g., individual operators, property management companies). • Chengli Superstructure Lifetime Service: Comprehensive after-sales support eliminates buyer concerns and enhances second-hand market premium. II. Chengli Model Resale Value Comparison: Sewage Suction Trucks vs. Other Sanitation Vehicles. To illustrate resale value differences clearly, the table below compares the 3-year resale rates of several common Chengli sanitation vehicle models, based on real-world tender cases and market feedback (new vehicle landed prices referenced are Chengli’s 2026 inclusive-tax prices): | Model | Capacity/Specification | New Vehicle Landed Price (2026 Reference) | Estimated 3-Year Second-Hand Market Price | Resale Rate | |--------|-------------------------|--------------------------------------------|---------------------------------------------|--------------| | Dongfeng Double-Cab Sewage Suction Truck (Blue License Plate, 3 m³) | 3 m³ | ~RMB 150,000–180,000 | ~RMB 88,000–104,000 | 55%–65% | | Blue License Plate Water Sprinkler Truck (5 m³) | 5 m³ | RMB 98,000–115,000 | ~RMB 55,000–70,000 | 50%–60% | | 4 m³ Compactor Garbage Truck | 4 m³ | RMB 110,000–135,000 | ~RMB 55,000–75,000 | 45%–55% | | 3 m³ Vacuum Sewage Suction Truck | 3 m³ | RMB 95,000–120,000 | ~RMB 45,000–65,000 | 45%–55% | Note: Data above is e