Government procurement case of a Dongfeng dual-cab sludge suction truck (blue license plate, 3 m³) in Nantong: Interpretation of the winning proposal and response process. In urban drainage network maintenance, riverbed dredging, and emergency rescue operations, sludge suction trucks serve as core equipment—whose performance, regulatory compliance, and procurement efficiency directly impact municipal operational effectiveness. This article takes a public tender project launched by a municipal sanitation department (hereinafter referred to as the 'procuring entity') for the purchase of one blue-license-plate, 3-m³ Dongfeng dual-cab sludge suction truck as its basis, and integrates Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as 'Chengli')'s end-to-end bidding response process to provide procurement units and industry practitioners with a comprehensive reference case. This case focuses on a typical government procurement event in Nantong in 2025, structured around the 'tender-process-oriented' framework to deconstruct the full chain—from tender document interpretation to post-delivery services. As an industry leader with 114 verified tender records (including 31 direct wins), Chengli’s solution design, pricing strategy, and delivery capability are fully demonstrated in this case. I. Core Tender Requirements: Precise Interpretation and Demand Alignment The tender was initiated by a subdistrict-level environmental maintenance unit, with a budget cap of approximately RMB 171,000 (per publicly available tender information). The tender documents specified the following key requirements: Vehicle Model & Chassis: Blue license plate (drivable with C1 driver’s license); Dongfeng dual-cab cab (to accommodate 3–4 on-site operators); overall vehicle dimensions must comply with urban narrow-road passage requirements. Tank Capacity: Strictly limited to 3 cubic meters (3 m³) for sewage suction and sludge removal; tank material must be high-strength steel. Functional Configuration: Must feature self-priming and self-discharging capabilities; equipped with a hydraulic lifting system; rear cover must support full-opening discharge; and include a high-pressure cleaning system. Emission Standard: Must comply with China VI emission standards to meet current environmental regulations and ensure nationwide registration and annual inspection eligibility. Delivery Timeline: Delivery, license plate registration, and operator training must be completed within 30 calendar days from contract signing. After-Sales Service: Chassis must be covered under Dongfeng’s nationwide warranty program; superstructure must offer lifetime technical support and 24-hour direct shipment of spare parts. Upon receiving the tender documents, Chengli’s sales team immediately convened cross-departmental technical and commercial teams for benchmarked analysis. The procuring entity’s strict stipulations regarding 'blue license plate' status and '3 m³ capacity' meant that only chassis models with complete official announcements and dimensionally compliant specifications could be selected. Chengli’s product database—containing 946 product entries across 44 categories—includes the CLW5040TQZD6 sludge suction truck (built on a Dongfeng chassis), which fully satisfies all requirements. Key Matching Points: • This model features a Dongfeng dual-cab cab, with a gross vehicle weight rating (GVWR) controlled at ≤4,495 kg—meeting blue license plate criteria. • Effective tank capacity is precisely 3 m³, matching the announced parameters exactly with those specified in the tender documents. • Complies with China VI emission standards, with full official announcement documentation enabling nationwide registration. II. Chengli’s Technical Response Proposal: Differentiated Advantages and Regulatory Compliance Assurance In response to the technical specifications outlined in the tender documents, Chengli submitted a detailed technical response highlighting the f