Government Procurement Case of National VI Dongfeng 3308 Wheelbase Sewage Treatment Vehicle in Zhoukou: Solution Analysis and On-Site Feedback Amid increasingly stringent environmental regulations, the upgrading and replacement of municipal sewage treatment equipment has become a top priority for sanitation departments nationwide. In 2025, a municipal sanitation department in Zhoukou launched a project to phase out and replace aging sewage treatment equipment, ultimately procuring National VI Dongfeng 3308 wheelbase sewage treatment vehicles supplied by Chengli Special Purpose Vehicle Co., Ltd. This article takes this case as a benchmark to deeply analyze the entire process—from pain-point diagnosis and requirements research to solution matching, delivery, commissioning, and post-delivery evaluation—providing reference for similar procurement projects. I. Project Background: Aging Equipment Fails to Meet Environmental Upgrade Requirements The municipal sanitation department previously used sewage treatment vehicles purchased between 2016 and 2018, which exhibited the following key issues: • Outdated Emission Standards: Most existing vehicles complied only with China IV or China V emission standards. Under Zhoukou’s full-scale enforcement of China VI emission controls initiated in 2024, operation of these vehicles is restricted in certain zones, significantly reducing operational efficiency. • Insufficient Treatment Capacity: Older units feature low per-cycle processing volume and lack sludge dewatering functionality, resulting in frequent sewage transport trips and steadily rising operating costs. • High Failure Rate and Maintenance Costs: Vehicles exceeding eight years of service experience frequent failures in critical components—including hydraulic systems and vacuum pumps—leading to annual maintenance expenses exceeding 30% of residual vehicle value. • Low Environmental Performance: Treated effluent from aging units fails to consistently meet Grade I-A discharge standards stipulated in the "Emission Standards for Pollutants from Urban Sewage Treatment Plants," exposing the department to potential penalties from environmental regulators. Based on these pain points, the department launched a new procurement initiative for sewage treatment vehicles in Q3 2025, with a total budget capped at approximately RMB 1.14 million, targeting two units meeting China VI emission standards, offering enhanced treatment capacity and lower maintenance costs. II. Requirements Research: Rigorous Selection Criteria Following project initiation, the procurement team surveyed multiple special-purpose vehicle manufacturers and referenced 108 technical parameters listed in the Ministry of Industry and Information Technology (MIIT) vehicle announcement database. Core requirements were clearly defined as follows: • Chassis Requirements: Must utilize Dongfeng 3308 wheelbase chassis compliant with China VI emission standards, featuring high payload capacity and factory-backed nationwide warranty coverage. • Bodywork Functions: Must integrate sewage suction/discharge, solid-liquid separation, sludge dewatering, and preliminary purification capabilities, with minimum single-operation treatment capacity of 5 m³. • Regulatory Compliance: Full MIIT vehicle type approval must be available to ensure normal registration, annual inspection, and road transport permit issuance in Zhoukou. • After-Sales Service: Requires nationwide chassis warranty plus lifetime bodywork service, with spare parts guaranteed delivery within 24 hours. • Budget Constraint: Final landed price per unit—including tax, freight, and registration fees—must fall within RMB 456,000–570,000. III. Chengli’s Solution Matching: Precise Alignment with Requirements Following an open tender process, Chengli Special Purpose Vehicle Co., Ltd. secured the contract based on the following solution: 3.1 Chassis Configuration Equipped with Dongfeng 3308 wheelbase chassis compliant with China