Interpretation of the Yangzhou Dongfeng D6 Blue-License-Plate Sewage Treatment Vehicle Government Procurement Case and Winning Bid Solution. In municipal sanitation vehicle procurement, blue-license-plate sewage treatment vehicles have become essential tools for urban refined management due to their eligibility for Class C driver’s license operation, unrestricted urban access, and high maneuverability. This article takes a recent procurement case by a municipal sanitation department in Yangzhou—featuring the Dongfeng D6 blue-license-plate sewage treatment vehicle—as an example, providing a detailed analysis of pre-tender preparations for government procurement, key points for drafting technical specifications, Chengli Special Purpose Vehicle Co., Ltd.’s support process for bid documentation submission, and a Q&A section offering objective reference for relevant entities. I. Preparations Prior to Government Procurement Tender In 2025, the Urban Management Bureau of a certain district launched a procurement plan for sewage treatment vehicles to address emergency treatment needs for small rivers and stormwater/sewage manholes within its jurisdiction. Following local procurement conventions, the budget was capped at approximately RMB 385,000, with plans to procure two blue-license-plate sewage treatment vehicles. Prior to procurement, the department undertook the following preparatory steps: Needs Assessment: Visited end-user units in neighboring cities to understand real-world operating conditions of sewage treatment vehicles. Drawing on the delivery case of five water-sprinkler trucks and mist cannons in a Guangdong industrial park, the department confirmed that the vehicles must integrate suction, filtration, and filter-press functions. Preliminary Technical Parameter Screening: Reviewed parameters published in the Ministry of Industry and Information Technology (MIIT) announcement list, focusing specifically on Dongfeng D6 chassis models (e.g., Chengli model CLW5070GSSD6), confirming gross vehicle weight does not exceed 4.5 tons—meeting the blue-license-plate standard (eligible for Class C driver’s license). Budget Formulation: Based on reference pricing provided by Chengli Special Purpose Vehicle Co., Ltd., the tax-inclusive landed cost for a blue-license-plate 5-cubic-meter sewage treatment vehicle (with a chassis similar to the Dongfeng D6) was estimated at RMB 108,000–127,000 per unit; thus, the total budget for two units was projected at RMB 216,000–253,000, with additional contingency allocated for registration, insurance, and other incidental fees. Tender Document Preparation: Specified competitive consultation as the procurement method, requiring bidders to submit complete MIIT announcements, environmental compliance certificates, after-sales service commitment letters, and performance records from the past three years. During this preparation phase, the department also contacted Mr. Zhang Yue, Sales Manager at Chengli Special Purpose Vehicle Co., Ltd. (Tel: ), to obtain detailed technical documentation and quotation sheets for the Dongfeng D6 chassis model—laying the groundwork for subsequent technical specification drafting. II. How to Draft the Technical Specifications Document The technical specifications document is the core of tender documents and directly determines procurement success. For this Yangzhou procurement case, the technical specifications must include the following key elements: Chassis Requirements: Dongfeng D6 series chassis; engine power ≥ 85 kW; China VI emission standard compliance; wheelbase 3,308 mm; tire size 7.00R16; equipped with ABS and power steering. Superstructure Requirements: Tank effective capacity: 5 m³; material: Q235 carbon steel, thickness 4 mm; equipped with vacuum pump, filtration system, and high-pressure cleaning device; suction depth ≥ 8 meters; suction flow rate ≥ 60 m³/h. MIIT Announcement Compliance: The vehicle model must be listed in the MIIT’s ‘A