Luoyang Dongfeng D6 Blue-Plate Sewage Treatment Vehicle Government Procurement Case and Bidding Solution Analysis In a municipal sanitation department tender held in Luoyang in 2026, the procuring entity required a batch of blue-plate sewage treatment vehicles for urban river remediation and routine sewage collection and transport. The budget was capped at approximately RMB 401,000 per unit, with a total quantity of 3 units. Ultimately, Chengli Special Purpose Vehicle Co., Ltd. delivered three blue-plate sewage treatment vehicles built on the Dongfeng D6 chassis. Customers reported stable vehicle performance and rational upper-structure design. This article uses this case as a starting point to deconstruct the tender evaluation criteria, helping procurement entities quickly grasp vehicle selection and quotation strategies. I. Breakdown of Tender Evaluation Criteria According to publicly available tender information from Luoyang, this procurement adopted a comprehensive evaluation method with a total score of 100 points: technical score (50 points), commercial score (30 points), and service score (20 points). The specific evaluation dimensions are as follows: Technical Score (50 points): Covers chassis configuration, upper-structure performance, compliance with official vehicle announcements, and emission standards. The Dongfeng D6 chassis is equipped with a Quanchai engine and meets China VI emission standards, satisfying the driving license requirement for Class C1 licenses—making it a popular choice. Commercial Score (30 points): Includes reasonableness of quotation (20 points) and past performance & qualifications (10 points). Quotations must remain below the budget ceiling while demonstrating cost-effectiveness. Service Score (20 points): Includes after-sales service network coverage, spare parts availability, and training support. Nationwide warranty coverage for Dongfeng chassis and lifetime service for Chengli upper-structures served as key scoring advantages. The procuring entity explicitly required complete official vehicle announcements enabling normal registration, annual inspection, and commercial operation, along with submission of MIIT (Ministry of Industry and Information Technology) announcement parameters (e.g., model CLW5070GSSD6). As a direct manufacturer, Chengli offered transparent configurations, eliminating markup by intermediaries—providing competitive advantages in both technical and commercial scoring. II. How to Achieve Full Marks in Technical Scoring The technical score carries a maximum of 50 points, with core emphasis on chassis compatibility and upper-structure design. Taking Chengli’s Dongfeng D6 blue-plate sewage treatment vehicle as an example: 1. Chassis Selection: Dongfeng D6 chassis, wheelbase 3,308 mm; equipped with Quanchai Q23-115E60 engine, max power 85 kW, China VI emission compliant. Paired with a 5-speed transmission and 7.00R16 steel-belted radial tires, it complies with blue-plate requirements (gross vehicle weight ≤ 4.5 tons), allowing operation under a Class C1 driver’s license. Referencing MIIT announcement parameters (e.g., CLW5070GSSD6), this chassis has full official certification and supports nationwide registration. 2. Upper-Structure Performance: The sewage treatment vehicle adopts a ‘tank + vacuum pump + filtration system’ configuration, with tank capacity of approximately 3–4 m³, supporting both suction and discharge functions. Chengli uses high-quality carbon steel tanks (4 mm thickness) with anti-corrosion treatment, plus safety devices such as liquid level indicators and overflow prevention valves. The vacuum pump achieves an air extraction rate of 60 m³/h and a maximum suction depth of 6 meters, ensuring high operational efficiency. 3. Emission Standards: Fully compliant with China VI standards, aligning with current environmental policies. In cities like Luoyang, China VI vehicles qualify for environmental labels without being subject to traffic restrict