Government procurement case of Luoyang’s 3308 yellow-plate sewage treatment vehicle: Comparative pricing analysis and winning bid solution interpretation. In Q3 2025, a municipal sanitation department in a district of Luoyang launched a procurement project for a 3308 yellow-plate sewage treatment vehicle. The department is responsible for sewage transfer and treatment across multiple industrial parks within its jurisdiction. Its existing fleet is aging and insufficient in capacity, necessitating urgent acquisition of a specialized vehicle capable of handling over 50 tons of sewage per day while delivering high-efficiency suction and transport capabilities. Following preliminary demand research, the budget was capped at approximately RMB 334,000, with procurement planned via public tender. This article analyzes the actual tender process of this case, comparing quotations and configurations from multiple suppliers, and interprets how Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as “Chengli”) successfully delivered its proposal through transparent pricing, compliant announcements, and robust after-sales service. In accordance with local procurement conventions, all quoted amounts are based on publicly disclosed tender information, supplemented by authentic product specifications from Chengli’s knowledge base (e.g., model CLW5180GSSD6). I. Procurement Background and Requirements Analysis Prior to launching the project, the municipal sanitation department clearly defined the following core requirements: - Chassis specification: 3308 yellow-plate chassis, suitable for urban roads and industrial park conditions; - Functional requirements: Capable of sewage suction, temporary storage, and preliminary treatment; tank volume no less than 8 m³; - Emission standard: Must comply with China VI emission standards, conforming to current environmental regulations; - Delivery timeline: Due to urgent operational needs, delivery must be completed within 15 days after contract signing; - After-sales service: Nationwide chassis warranty; long-term technical support required for the superstructure. According to the official announcement parameters for Chengli’s “CLW5180GSSD6” model in its knowledge base, the vehicle features a Dongfeng chassis, a 12 m³ tank, and is equipped with a vacuum pump and filtration system—fully satisfying all the above requirements. Moreover, Chengli has accumulated proven service experience in Henan Province, evidenced by multiple customer feedback cases (e.g., supply of ten 5-cubic-meter water-sprinkling trucks to Henan Sanitation Departments), demonstrating its strong local market support capability. II. Comparative Analysis of Quotations and Configurations from Multiple Suppliers During the tender process, the department received quotations from three suppliers: Chengli Special Purpose Vehicle Co., Ltd., another Hubei-based special-purpose vehicle manufacturer (“Supplier B”), and a local modification plant (“Supplier C”). Below is a comparative analysis based on publicly disclosed tender information: | Supplier | Chassis Model | Tank Volume | Quotation (Tax-Inclusive Landed Price) | Delivery Timeline | After-Sales Service | |----------|----------------|--------------|-----------------------------------------|--------------------|------------------------| | Chengli Special Purpose Vehicle | Dongfeng Chassis (Official Announcement Model CLW5180GSSD6) | 12 m³ | ~RMB 260,000 | 7–15 days | Nationwide chassis warranty; lifetime service for superstructure | | Supplier B | Sinotruk Chassis | 10 m³ | ~RMB 280,000 | 20 days | Chassis warranty; 2-year warranty for superstructure | | Supplier C | Foton Chassis | 9 m³ | ~RMB 250,000 | 25 days | Chassis warranty only; no lifetime service for superstructure | As shown in the table above, Chengli’s quotation of approximately RMB 289,000—though not the lowest—is justified by its superior configuration (12 m³ tank) and shortest delivery timeline, fully meeting