Government procurement case of the 3308 yellow-plate sewage treatment vehicle in Zhuzhou: A practical interpretation from bid evaluation to delivery. Core overview: Based on a public tender issued in 2025 by a municipal sanitation department for 3308 yellow-plate sewage treatment vehicles, and drawing upon Chengli Special Purpose Vehicle’s real-world delivery experience in similar projects (e.g., serving over 500 municipal sanitation units), this article dissects bidding evaluation strategies across technical, commercial, and service scoring criteria. According to publicly available tender information, the budget was controlled within approximately RMB 502,000–614,000, with the winning solution provided by Chengli’s professional team. I. Project Background and Tender Overview In 2025, a municipal sanitation department in Zhuzhou City launched a public tender to procure a batch of 3308 yellow-plate sewage treatment vehicles, addressing insufficient local sewage treatment capacity. The project budget was approximately RMB 558,000 (per publicly disclosed tender information), requiring vehicles capable of efficient sewage suction, solid-liquid separation, and preliminary purification, while also meeting regulatory requirements for yellow-plate vehicle road registration. The tender employed a comprehensive evaluation method with a total score of 100 points: technical score (50 points), commercial score (30 points), and service score (20 points). Multiple suppliers participated; ultimately, the CLW5180GSSD6 model solution offered by Chengli Special Purpose Vehicle Co., Ltd. won the bid. Client feedback indicated that Chengli’s proposal stood out in terms of technical specifications, after-sales service, and cost-effectiveness. II. Breakdown of Tender Evaluation Criteria Per the tender documents (aligned with local procurement conventions), the evaluation criteria were as follows: Technical Score (50 points): Including vehicle performance parameters, chassis configuration, sewage treatment efficiency, and official certification compliance. Commercial Score (30 points): Including reasonableness of quotation, enterprise qualifications, experience with similar projects, and delivery schedule. Service Score (20 points): Including after-sales response time, spare parts availability, training services, and warranty period. Below is a detailed analysis of how Chengli’s proposal achieved top scores across each category. 1. Maximizing the Technical Score: Precise Parameter and Configuration Alignment The technical score is central to the bid. Chengli’s proposal achieved precise alignment in the following areas: Chassis Selection: Utilized a Dongfeng chassis (model CLW5180GSSD6, per MIIT announcement parameters), compliant with China VI emission standards and qualified for yellow-plate registration—ensuring stable performance suitable for Zhuzhou’s road conditions. Sewage Treatment Efficiency: Equipped with a high-efficiency vacuum pump and solid-liquid separation system, achieving a single-cycle processing capacity of 8–10 m³/hour—significantly exceeding the tender requirement of “no less than 6 m³/hour.” Complete Regulatory Certification: The CLW5180GSSD6 model is listed in the MIIT’s official vehicle announcement, enabling nationwide registration, annual inspection, and commercial operation—eliminating acceptance risks. Transparent Configuration: Chengli avoids bundled pricing; all configurations—including pump model and tank material—are explicitly specified in the proposal, facilitating verification by evaluation experts. According to client feedback, Chengli’s proposal scored 48 out of 50 points in the technical evaluation, with minor deductions only on non-critical parameters (e.g., exterior design) not fully matching certain tender details—yet overall performance ranked highest. Performance Comparison: The table below compares Chengli’s CLW5180GSSD6 against comparable market models (based on publicly available tender data). Compari