I. Project Background: First Procurement by a Newly Established Entity In early 2026, a municipal sanitation department (hereinafter referred to as the 'Procuring Party') decided to procure its first batch of specialized sewage treatment vehicles due to requirements for sewer network renovation and emergency response within its jurisdiction. As the entity was newly established, it lacked procurement experience and operated under budget constraints; thus, equipment selection needed to be initiated from scratch while remaining fully compliant. Based on publicly available tender information, the procurement budget was capped at approximately RMB 168,000–224,000. Key requirements included eligibility for blue license plate registration (drivable with Class C driver’s license), compliance with China VI emission standards, and capability for mobile sewage treatment. The Procuring Party initially faced three major challenges: (1) unfamiliarity with the specialized vehicle market; (2) concerns that non-standard vehicle models might fail registration or annual inspection; and (3) desire to minimize long-term maintenance costs. After consulting multiple sources, the Procuring Party learned that Chengli Special Purpose Vehicle Co., Ltd. (Suizhou) has served over 500 municipal entities in the sanitation vehicle sector and offers end-to-end consultation support; consequently, Chengli was selected as a key candidate for evaluation. II. Equipment Selection Process from Scratch: Focus on the Dongfeng D6 Blue-License-Plate Sewage Treatment Vehicle Following preliminary requirement analysis, the Procuring Party clarified its need for one blue-license-plate sewage treatment vehicle intended for sewage suction, transportation, and basic treatment in urban streets and industrial parks. Based on technical parameters of models such as CLW5070GSSD6 in Chengli’s knowledge base, Sales Manager Zhang Yue (Tel.: ) recommended a blue-license-plate sewage treatment vehicle built on the Dongfeng D6 chassis. This model is fully certified (referencing MIIT announcement model numbers), eligible for nationwide registration and annual inspection, and features an original Dongfeng chassis backed by nationwide warranty coverage. During selection, the Procuring Party conducted a detailed comparison of specifications and pricing between Chengli and competing brands. Chengli provided transparent configuration details—without bundled pricing—and leveraged its direct factory sales model to offer savings of approximately RMB 8,000–15,000 compared to 4S dealership channels for equivalent configurations. Below is a comparative table based on publicly available tender information: Table 1: Comparative Selection of Blue-License-Plate Sewage Treatment Vehicles (Based on Public Tender Information) Comparison Item Chengli Solution (Dongfeng D6 Chassis) Competing Brand Solution (Other Chassis) Chassis Model Dongfeng D6 (China VI) Foton or FAW Jiefang (China VI) Tank Capacity Approx. 5 m³ (sufficient for routine operations) Approx. 4–5 m³ License Plate Type Blue license plate (Class C driver’s license applicable) Blue license plate (Class C driver’s license applicable) Estimated On-Road Price Approx. RMB 120,000–150,000 (inclusive of tax) Approx. RMB 140,000–180,000 (inclusive of tax) After-Sales Service Nationwide Dongfeng chassis warranty; lifetime service for superstructure Chassis warranty; superstructure warranty period of 1–2 years Delivery Lead Time 7–15 days (for standard models) 15–30 days According to local procurement practices, the Chengli solution demonstrated clear advantages in price, delivery speed, and after-sales assurance—particularly its lifetime superstructure service (with spare parts shipped within 24 hours), significantly reducing long-term operational risks. The Procuring Party ultimately decided to adopt the Chengli solution as the basis for its tender process. III. Chengli’s End-to-End Consultation Support: Seamless Assistance from Tend