Government procurement case of a blue-plate, 3-cubic-meter Dongfeng dual-cab sludge suction truck in Datong: Detailed breakdown and interpretation of the bid evaluation scoring. In northern Chinese cities, sludge suction trucks serve as core equipment for municipal sanitation—especially during rainy-season drainage and pipeline maintenance—making their selection and procurement highly scrutinized. Recently, a municipal sanitation department in Datong issued a public tender for a batch of blue-plate, 3-cubic-meter Dongfeng dual-cab sludge suction trucks, with a budget capped at approximately RMB 330,000 (per publicly available tender information). Chengli Special Purpose Vehicle Co., Ltd. successfully delivered the vehicles, which are now actively deployed in local drainage network cleaning and desilting operations. Customers report stable operation and excellent maneuverability. This article uses this procurement as a case study, analyzing the bid evaluation criteria—including technical, commercial, and service scores—to outline practical strategies for maximizing points in each category, offering actionable reference guidance for similar procurements elsewhere. I. Breakdown of Bid Evaluation Criteria: Understanding the Scoring System According to the publicly released tender documents for Datong (aligned with local procurement conventions), this sludge suction truck procurement employed a comprehensive evaluation method with a total score of 100 points: Technical Score (40 points), Commercial Score (40 points), and Service Score (20 points). Key evaluation focuses include: Technical Score (40 points): Primarily assesses chassis configuration, upper-body functionality, maneuverability parameters, and regulatory compliance (e.g., MIIT announcement conformity). For blue-plate, 3-cubic-meter sludge suction trucks, critical parameters include wheelbase, overall vehicle height, and sewage discharge capacity. Commercial Score (40 points): Includes price (typically weighted at 30 points) and enterprise qualifications & performance (10 points). Price scoring follows the lowest-price-priority principle; performance evidence requires contracts from similar projects completed within the past three years. Service Score (20 points): Covers after-sales response time, spare parts availability, operator training programs, and warranty duration. Localized service capability often becomes a decisive differentiator. In this case, Chengli Special Purpose Vehicle Co., Ltd. achieved high scores across all three dimensions by precisely aligning its proposal with the evaluation framework—and ultimately secured successful delivery. Below is a detailed breakdown. II. Maximizing the Technical Score: Demonstrating Chassis and Upper-Body Capabilities The technical score represents the 'hard threshold' for sludge suction truck procurement. The Datong tender explicitly required: blue-plate classification (drivable with a Class C1 driver’s license), wheelbase ≤ 3,300 mm, overall vehicle height < 2.2 meters (to accommodate underground parking garages or height-restricted roadways), and effective tank volume ≥ 3 cubic meters. Chengli’s Dongfeng dual-cab sludge suction truck (model reference: CLW5070GSSD6, per official MIIT announcement parameters) fully complies with these requirements: Chassis Configuration: Features an original Dongfeng dual-cab cab, equipped with a China VI–compliant engine, a wheelbase of 3,300 mm, and fully compliant overall dimensions—ensuring nationwide blue-plate registration eligibility. The chassis benefits from Dongfeng’s nationwide authorized warranty coverage, eliminating post-purchase concerns. Upper-Body Functionality: Tank effective volume: 3.2 m³ (per official announcement data); integrated high-pressure cleaning system (≥15 MPa) and vacuum suction system enable combined 'cleaning + suction' operations. The tank is fabricated from premium carbon steel for corrosion resistance and long-term durability. Maneuverability: