Government Procurement Case and Bid-Winning Solution Analysis for the National VI Dongfeng 3308 mm Wheelbase Sewage Treatment Vehicle in Nanjing. In recent years, with the advancement of urban water environment remediation and increasingly stringent environmental protection requirements, sewage treatment vehicles have become essential procurement equipment for municipal sanitation departments. This article takes a real-world procurement case—where a district Urban Management Bureau acquired one National VI Dongfeng 3308 mm wheelbase sewage treatment vehicle—as its starting point. It provides procurement entities with a comprehensive selection and decision-making reference, covering qualification review, production license verification, manufacturer credential presentation, and FAQs. In this case, the procuring entity ultimately selected Chengli Special Purpose Vehicle Co., Ltd. The unit price, based on publicly disclosed tender information, ranges approximately from RMB 350,000 to 420,000, and delivery and registration were successfully completed. Below is a detailed walkthrough of the entire process. I. Case Background: Procurement Requirements of a District Urban Management Bureau in Nanjing In 2025, a district Urban Management Bureau in Nanjing planned to procure one sewage treatment vehicle to address local sewer pipeline cleaning and emergency response needs. Key requirements included: chassis meeting National VI emission standards; wheelbase of 3308 mm (based on Dongfeng light-duty truck chassis); integrated functions of suction, separation, and discharge; and compliance with local environmental regulations and vehicle registration requirements. The budget was capped at approximately RMB 441,000. Based on publicly available tender data, comparable models in the market ranged between RMB 350,000 and 450,000. The procuring entity emphasized the need for formal manufacturing qualifications, full inclusion in the Ministry of Industry and Information Technology (MIIT) announcements, and reliable after-sales service support. Ultimately, after multiple rounds of evaluation, Chengli Special Purpose Vehicle secured the order by delivering a sewage treatment vehicle built on the Dongfeng 3308 mm wheelbase chassis (model reference: CLW5070GSSD6 series platform). Feedback from current operations has been positive. II. Essential Qualifications Checklist for Authorized Manufacturers Procuring specialized sanitation vehicles—especially special-purpose equipment such as sewage treatment vehicles—requires rigorous verification of manufacturer credentials as the first step. According to national regulations and standard government procurement practices, the following five qualifications constitute mandatory thresholds: 1. MIIT Announcement Directory: The vehicle model must be listed in the MIIT’s 'Announcement of Road Motor Vehicle Manufacturers and Products' to ensure legal registration, licensing, and annual inspection eligibility. For example, Chengli’s CLW5070GSSD6 model is verifiable in the official announcement. 2. CCC Mandatory Certification: The complete vehicle must pass China Compulsory Certification (CCC), confirming compliance with national safety and environmental protection standards. 3. Business License and Scope of Operations: The manufacturer must hold a valid business license explicitly authorizing special-purpose vehicle manufacturing or sales, with registered scope including terms such as 'sanitation equipment' or 'automobile manufacturing'. 4. ISO Quality Management System Certification: At minimum, ISO 9001 certification is required; certain projects may further require ISO 14001 (Environmental Management) or OHSAS 18001 (Occupational Health and Safety) certifications. 5. After-Sales Service Capability Documentation: Evidence includes nationwide chassis warranty agreements (e.g., Dongfeng), lifetime upfit service commitments, and established spare parts supply channels. For instance, Chengli offers nationwide Dong