Government procurement case of Ford Transit V362 service vehicles in Haikou: From annual inspection compliance to practical performance in hot-humid environments. I. Case Background: Procurement Requirements of a Municipal Sanitation Department in Haikou. In early 2026, a municipal sanitation department in Haikou planned to procure a batch of service vehicles to enhance operational efficiency during the rainy season and improve emergency response capability—intended for sanitation inspections, emergency rescue, and on-site dispatch. After multiple rounds of tendering and comparative evaluation of technical proposals, the department selected Chengli service vehicles built on the Ford Transit V362 chassis. A total of eight units were delivered, with an approximate unit price of RMB 220,000 (based on publicly available tender information), keeping the total budget within RMB 2,049,000. Haikou lies in a tropical monsoon climate zone, with an average annual humidity exceeding 80%, a long rainy season, and frequent precipitation—posing stringent requirements on vehicle rust resistance and sealing component durability. Meanwhile, these vehicles must comply with China VI emission standards, be eligible for nationwide registration and annual inspection, and be delivered within 45 days after the tender announcement is issued. II. Significance of MIIT Announcement: The 'Passport' for Annual Inspection Compliance. In this case, the Ford Transit V362 service vehicles supplied by Chengli Special Purpose Vehicle Co., Ltd. feature chassis model CLW5040XXHJH6 (referencing MIIT announcement parameters), a legally approved modified vehicle type listed in the 'Announcement of Road Motor Vehicle Manufacturers and Products' issued by the Ministry of Industry and Information Technology (MIIT). Full inclusion in the MIIT Announcement signifies that the vehicle has passed MIIT’s technical review upon factory release—including comprehensive parameters covering chassis, body-upfit, emissions, and safety configurations—ensuring lawful registration, annual inspection, and commercial operation nationwide. Incomplete or missing MIIT Announcement documentation may lead to the following issues: Registration Obstruction: Local traffic management offices may reject license plate issuance citing 'non-conforming announcement parameters', especially for modified vehicles—for instance, those exceeding length or height limits due to added equipment. Annual Inspection Difficulties: During annual inspection, official verification against MIIT Announcement data is mandatory; unclear matching between chassis and body-upfit parameters may result in classification as illegal modification, causing inspection failure. Operational Risks: Vehicles lacking MIIT Announcement eligibility cannot obtain commercial operation permits, jeopardizing regulatory compliance for routine municipal operations. In the Haikou case, Chengli not only provided complete MIIT Announcement documentation but also optimized announcement parameters specifically for local hot-humid conditions—such as applying anti-corrosion coatings and upgrading sealing components—all falling within the MIIT-permitted scope of modifications, thereby eliminating potential legal risks post-delivery. III. Lessons from Non-Compliant Vehicles: From 'Cost-Saving' to 'Headaches'. A coastal city once procured a batch of unannounced modified service vehicles, attempting registration via 'internal channels'. The outcome was as follows: Registration Rejection: Due to missing MIIT Announcement, the traffic management office required disassembly and individual verification of each vehicle—taking three months and rendering all vehicles non-operational during that period. Annual Inspection Penalties: During subsequent inspections, aging seals caused water leakage, leading authorities to classify the vehicles as 'unauthorized modifications', resulting in fines and mandatory restoration to original configuration. High Maintenance Cost