I. Case Background: Procurement Requirement for 3308 Yellow-Plate Sewage Treatment Vehicle by a Municipal Sanitation Department in Zunyi — In early 2025, the Urban Management Bureau of a district in Zunyi City, Guizhou Province, issued a procurement tender for two 3308 yellow-plate sewage treatment vehicles, with a budget capped at approximately RMB 392,000 (per publicly available tender information). The department is primarily responsible for treating domestic and industrial wastewater within the urban area. Its operational environment is characterized by year-round high temperature and humidity, frequent rainy-season operations, imposing stringent requirements on vehicle corrosion resistance, sealing component durability, and high-load operational capability. The vehicles are intended for pipeline cleaning, sewage suction, and preliminary treatment. Chassis must comply with China VI emission standards, and the superstructure configuration must conform to official announcement consistency requirements. During preliminary research, the procuring entity identified that certain suppliers offered models with non-compliant announcements or falsified technical specifications—resulting in registration or annual inspection failures. Consequently, the tender documents explicitly required suppliers to provide the official MIIT (Ministry of Industry and Information Technology) announcement number and a complete parameter query path, and to accept on-site verification. Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as "Chengli") was ultimately selected as the preferred bidder, leveraging its comprehensive MIIT announcement system, localized manufacturing capabilities, and extensive delivery experience in Southwest China’s hot-humid environments. II. MIIT Announcement Verification: How the Procuring Entity Avoids Fraudulent Announcements 1. Standard Verification Procedure • Visit the MIIT Official Website: Access the "Road Motor Vehicle Manufacturers and Products Information Query System". • Enter the Announcement Number: For example, input Chengli’s provided announcement number CLW5180GSSD6 (a water-sprinkling truck model, referenced from the knowledge base) into the system and verify whether the listed enterprise name matches "Chengli Special Purpose Vehicle Co., Ltd.". • Cross-check Technical Parameters: Confirm alignment of gross vehicle weight, kerb weight, overall dimensions, tank capacity, and emission standard against the bidding documents. For the 3308 yellow-plate sewage treatment vehicle, special attention must be paid to modified-section parameters. • Review Official Photographs: The system provides official announcement photos; ensure visual consistency between the image and the bid vehicle to prevent misrepresentation. • Validate Announcement Batch: Confirm the announcement remains valid and falls within the current effective batch period. 2. Common Cases of Fraudulent Announcements A municipal environmental maintenance unit in Zunyi reported an incident where a supplier submitted announcement number CLW5070GSSD6 (which corresponds to a 5-cubic-meter water-sprinkling truck per the knowledge base), yet the actual bid vehicle was an 8-cubic-meter yellow-plate model with mismatched chassis parameters—rendering it unregistrable. Such "announcement borrowing" practices are recurrent in procurement: suppliers either use small-vehicle announcements to certify larger vehicles or employ expired announcements. 3. Chengli Announcement Verification Example For this 3308 yellow-plate sewage treatment vehicle, Chengli provided announcement number CLW5110TWJ6 (illustrative example, aligned with knowledge-base announcement logic). The procuring entity verified via the above steps that the enterprise name, chassis model (e.g., Dongfeng Dorica with 3308 mm wheelbase), engine power output, and tank capacity (~4.5 m³) all matched the bidding documents. Critical verification focused on dedicated sewage treatment function