Government Procurement Case and Bid-Winning Solution Analysis for the Dongfeng D6 Blue License Plate Sewage Treatment Vehicle in Jiaxing Against the backdrop of upgraded urban environmental governance across East China, an environmental maintenance unit in a district of Jiaxing (hereinafter referred to as the 'Procuring Entity') launched a tender for blue license plate sewage treatment vehicles in Q3 2025. This procurement focused on urban drainage network maintenance, emergency sewage discharge, and small-scale sewage treatment scenarios, imposing stringent requirements on vehicle maneuverability, operational convenience, and emission standards. Based on publicly available tender information and Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as 'Chengli')'s actual responsive proposal, this article comprehensively reconstructs the end-to-end procurement process to serve as a reference for similar projects. I. Core Requirements in the Tender Document According to the tender notice issued by the Procuring Entity, the procurement involved two blue license plate sewage treatment vehicles, with a total budget capped at approximately RMB 741,000 (per publicly disclosed tender information), i.e., around RMB 320,000 per unit. Key requirements included: Chassis Requirements: Dongfeng D6 series chassis, wheelbase 3,308 mm, China VI emission standard, operable with a Class C driver’s license (blue license plate), and gross vehicle weight not exceeding 4,495 kg. Superstructure Requirements: Capable of sewage suction, solid-liquid separation, temporary storage, and self-dumping functions; tank capacity no less than 3.5 m³; equipped with liquid-level alarm device. Service Requirements: Minimum warranty period of 2 years; nationwide chassis warranty; lifetime technical support for superstructure; fault response time no longer than 48 hours. Delivery Timeline: Delivery and license plate registration to be completed within 15 working days after contract signing. II. Chengli’s Technical Response Proposal Leveraging its CLW5070GSSD6 model (as certified in the MIIT Announcement), Chengli optimized and tailored the following technical solution: 1. Chassis Configuration Equipped with Dongfeng D6 series chassis powered by a Yunnan-based 130-horsepower diesel engine, compliant with China VI emission standards. Chassis wheelbase: 3,308 mm; overall vehicle dimensions: length ≤ 5,995 mm, width ≤ 1,950 mm, height ≤ 2,350 mm—fully meeting Class C license plate driving requirements. Standard features include factory-installed air conditioning, power steering, and ABS anti-lock braking system, enhancing driving comfort and safety. 2. Superstructure System Tank fabricated from Q235 carbon steel, 4 mm thick, with effective capacity of 3.7 m³—slightly exceeding tender requirements. The sewage collection tank is equipped with hydraulic self-dumping functionality for convenient unloading. Suction system employs a dual-stage water-ring vacuum pump, achieving maximum suction depth of 7 meters and minimum suction efficiency of 30 m³/hour. A liquid-level alarm device is installed on the tank top to prevent overfilling. The entire vehicle design conforms to the official CLW5070GSSD6 announcement parameters, ensuring seamless nationwide registration. 3. Additional Configurations Standard equipment includes tool box, nighttime illumination lamps, and rear LED warning lights. Optional high-pressure cleaning gun (with 15-meter hose) is available. The vehicle’s electrical system operates on 24 V DC, powered by a 100 Ah battery, supporting continuous operation for over 4 hours. III. Commercial Quotation Strategy Chengli adopted a direct manufacturer sales model—eliminating intermediaries and ensuring transparent pricing. For this procurement, Chengli’s quotation is as follows: Chengli Dongfeng D6 Blue License Plate Sewage Treatment Vehicle Bid Quotation Breakdown (Reference: Public Tender Information) Item Chengli Quotation Market Reference