I. Background of the China VI Emission Standard Transition and Overview of the Yichang Case In recent years, with the continuous tightening of national requirements for air pollution prevention and control, the full implementation of the China VI emission standard has driven technological upgrades across the special-purpose vehicle market. As a key node city along the Yangtze River Economic Belt, Yichang launched a new round of municipal sanitation vehicle renewal procurement program in 2025—among which the CLW5180GSSD6 yellow-plate sewage treatment vehicle project attracted significant attention. According to publicly released tender information, the project involves approximately eight units, with a total budget capped at around RMB 3.105 million, primarily intended for urban sewage pipeline maintenance and emergency response. Chengli Special Purpose Vehicle Co., Ltd. successfully delivered this batch of vehicles based on the compliance and cost-effectiveness of its CLW5180GSSD6 model; customer feedback confirms stable operation and full compliance with emission standards. II. Timeline for Phasing Out Older Vehicles: Accelerated Elimination of China III and China IV Models Local policies designate 2025–2026 as the peak period for phasing out older vehicles. In Yichang, for example, yellow-plate sewage treatment vehicles meeting China III or lower emission standards are already prohibited from operating within the urban core area, while China IV vehicles face increasing restrictions—including driving limitations and stricter annual inspection requirements. Chengli’s solution aligns precisely with this timeline, offering a full range of China VI-compliant chassis from leading domestic brands such as Dongfeng and Sinotruk, ensuring legal registration and smooth annual inspections. Per official MIIT announcement parameters (e.g., CLW5180GSSD6), this model has passed national certification for emission compliance—eliminating future policy-related risks for users. III. Chengli’s China VI Solution: Energy-Efficient Upgrades and Technical Advantages For the Yichang project, Chengli recommended the CLW5180GSSD6 yellow-plate sewage treatment vehicle. Key configurations include: • Chassis Selection: Dongfeng Tianlong or Sinotruk Howo China VI chassis, with powertrain fully compliant with the latest emission regulations; • Superstructure Design: Equipped with a high-efficiency sewage separation system, achieving a processing capacity of 30 m³/h—ideal for urban pipeline desilting; • Energy-Saving Features: Incorporates low-fuel-consumption engines and intelligent control modules, delivering ~15% energy savings versus legacy models and significantly reducing operational costs; • After-Sales Support: Nationwide warranty coverage for Dongfeng chassis; lifetime service for superstructure; spare parts dispatched within 24 hours—ensuring uninterrupted field operations. Based on local procurement practices, the unit price for this model is approximately RMB 350,000 (referencing Chengli’s 2026 tax-inclusive landed pricing range: RMB 310,000–388,000 for 5-cubic-meter street sweepers; yellow-plate sewage treatment vehicles of comparable class fall within a similar bracket). For detailed configuration specifications, please contact Regional Sales Manager Zhang Yue (Tel: +86 ) or call the official hotline at . IV. Comparative Data: Chengli Solution vs. Mainstream Market Competitors Comparison Item | Chengli CLW5180GSSD6 Yellow-Plate Sewage Treatment Vehicle | Competitor Brand A (Same Class) | Competitor Brand B (Same Class) ---|---|---|--- Emission Standard | China VI (MIIT Announcement No. CLW5180GSSD6) | China VI | China V (requires upgrade) Chassis Brand | Dongfeng / Sinotruk / Foton, etc. | Single brand | Single brand Processing Capacity (m³/h) | 30 | 25 | 28 Energy Efficiency | ~15% improvement | ~10% improvement | ~8% improvement Delivery Lead Time | 7–15 days (zero-inventory dispatch) | 20–30 days | 15–25 days After-