Government procurement case of Ford Transit V362 service vehicles in Wenzhou: Analysis of anti-rust sealing components and high-load performance. I. Project Background: Coordinated Demand for Joint Procurement Across Multiple Districts and Counties. In summer 2025, municipal sanitation departments across several districts and counties in the Wenzhou region—including Lucheng District, Longwan District, Ouhai District, and Ruian City—simultaneously proposed procurement requirements for a batch of light-duty service vehicles due to a sharp increase in road inspection, emergency repair, and public service support tasks within their jurisdictions. According to publicly available tender information, the project involved the procurement of approximately 30 units of Ford Transit V362 service vehicles, with a total budget capped at approximately RMB 8.963 million (approx. RMB 250,000 per unit). This procurement adopted a joint procurement model, led by the Wenzhou municipal supervisory authority, featuring unified technical specifications and centralized tendering to reduce procurement costs and ensure vehicle performance consistency. Wenzhou is located in southeastern Zhejiang Province along the coast, featuring a subtropical monsoon climate characterized by hot, rainy summers and cool, humid winters, with an annual average relative humidity exceeding 80%. Such a warm, humid environment imposes stringent requirements on vehicle rust resistance, sealing component durability, and high-load operational performance. Consequently, the procuring entity specifically emphasized in its technical proposal that vehicles must feature anti-rust coating treatments, corrosion-resistant sealing components, and the capability to withstand high-load operating conditions frequently encountered during the rainy season. II. Technical Specification Development: Special Requirements for Humid, Warm Environments. In the 'Technical Specifications for Service Vehicles in the Wenzhou Region', the procuring entity explicitly defined a series of core criteria to ensure long-term stable operation of vehicles under coastal high-humidity conditions. Key technical requirements include: Chassis and Body Anti-Rust Protection: The chassis must employ electrophoretic coating or galvanization; critical fasteners must be made of stainless steel; anti-rust primer must be applied to side panels and floorboards, with a minimum coating thickness of 80 μm. Sealing Component Durability: Door, window, and compartment seals must utilize EPDM (ethylene propylene diene monomer) rubber, exhibiting UV resistance and salt fog corrosion resistance, ensuring no aging or cracking for at least five years. High-Load Operational Capability: The engine must comply with China VI emission standards, deliver a minimum maximum power output of 120 kW, and be paired with either a 6-speed manual or automatic transmission to accommodate frequent start-stop cycles and prolonged idling conditions. Service Compartment Configuration: Interior must include modular storage racks, foldable workbenches, and emergency power outlets to facilitate on-site operations. These specifications drew upon Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as 'Chengli')’s experience from similar projects in other coastal cities. As one of China’s largest special-purpose vehicle manufacturers, Chengli offers customized bodywork solutions based on various chassis platforms—including the Ford Transit V362—with mature processes for anti-rust treatment and sealing technologies. III. Centralized Tendering and Chengli’s Bulk Supply Advantages. The project completed its public tender process in July 2025, with Chengli Special Purpose Vehicle Co., Ltd. emerging as the successful bidder responsible for delivering all 30 Ford Transit V362 service vehicles. Per the tender documents, Chengli was required to complete delivery within 45 days following contract signing, including upfitting of the vehicle bodies and prov