Hefei National VI Dongfeng 3308 mm Wheelbase Sewage Treatment Vehicle Government Procurement Case: Interpretation of Evaluation Criteria and Winning Bid Proposal. In 2025, a municipal sanitation department (hereinafter referred to as “Hefei Municipal Sanitation”) issued a procurement notice for National VI Dongfeng 3308 mm wheelbase sewage treatment vehicles. The procurement aims to enhance urban sewage treatment capacity, with a budget capped at approximately RMB 967,000 (per publicly available tender information), and plans to acquire two units. After multiple rounds of evaluation, Chengli Special Purpose Vehicle Co., Ltd. secured the contract by leveraging comprehensive advantages across technical, commercial, and service dimensions, ultimately delivering two CLW5070GSSD6 model sewage treatment vehicles. This article analyzes the competitive strategies across technical, commercial, and service scoring categories—based on the tender’s evaluation criteria—to provide reference for similar procurement projects. I. Breakdown of Tender Evaluation Criteria: Weight Allocation Across Technical, Commercial, and Service Categories According to Hefei Municipal Sanitation’s tender documents, this procurement employed a comprehensive evaluation method with a total score of 100 points, divided into three components: Technical Score (50 points), Commercial Score (30 points), and Service Score (20 points). The Technical Score emphasizes vehicle performance and configuration; the Commercial Score focuses on bid price and supplier qualifications; and the Service Score assesses after-sales support and responsiveness. Chengli Special Purpose Vehicle formulated targeted strategies for each category to ensure scoring advantages. The approximate weight distribution for each evaluation category (based on local procurement practice) is as follows: Technical Score (50 points): Includes vehicle parameters (e.g., sewage tank capacity, suction efficiency), chassis configuration, emission standard compliance, and energy consumption performance. Compliance with the National VI emission standard is a mandatory requirement; the Dongfeng 3308 mm wheelbase chassis received bonus points due to its stability and adaptability. Commercial Score (30 points): Includes bid price, enterprise qualifications, manufacturing experience, and number of prior successful case references. As one of China’s largest special-purpose vehicle manufacturers, Chengli has collaborated with over 500 municipal sanitation authorities nationwide, giving it a strong advantage in this category. Service Score (20 points): Includes warranty period, response time, operator training services, and spare parts availability. Chengli offers nationwide Dongfeng chassis warranty coverage and lifetime after-sales support for the superstructure, ensuring full marks in the service category. Hefei Municipal Sanitation’s tender documents explicitly require that vehicles possess high-efficiency sewage treatment capability and be adaptable to local road conditions. Prior to bidding, Chengli conducted detailed user needs analysis to ensure precise alignment between its proposal and end-user requirements. II. Maximizing the Technical Score: Performance Analysis of the CLW5070GSSD6 Model The Technical Score was the core focus of this tender. Chengli’s recommended CLW5070GSSD6 sewage treatment vehicle is built upon the Dongfeng 3308 mm wheelbase chassis and fully complies with the National VI emission standard. Its outstanding technical specifications meet Hefei Municipal Sanitation’s stringent requirements for sewage treatment vehicles. Key Technical Specifications (per MIIT announcement data): Chassis Model: Dongfeng 3308 mm wheelbase, equipped with Yuchai or Chaoyang National VI engine, rated power approx. 85 kW, delivering high torque and low fuel consumption. Sewage Tank Capacity: Approx. 3.5 m³; tank fabricated from Q235 carbon steel with internal anti-slosh baffles to ensure transport stability.