I. Project Background and Procurement Requirements In 2024, a municipal sanitation department launched a procurement project for a CLW 3308 yellow-plate sewage treatment vehicle to address urban drainage network maintenance and emergency sewage treatment needs. According to publicly released tender information, the budget was controlled at approximately RMB 344,000–459,000, with one specialized vehicle required—capable of suction, separation, and purification—for cleaning sewage wells, rivers, and emergency response operations. The procuring entity explicitly stipulated that the vehicle must comply with China VI emission standards, feature a chassis from a well-known brand, and possess full official vehicle type approval (Announcement) to ensure nationwide registration and annual inspection eligibility. During the tender process, the procuring party rigorously reviewed suppliers’ qualifications, including inclusion in the MIIT’s 'Announcement of Motor Vehicle Manufacturers and Products', ISO quality management system certification, and after-sales service system compliance. Ultimately, Chengli Special Purpose Vehicle Co., Ltd. secured the contract and successfully delivered the vehicle, leveraging its complete Announcement compliance, transparent pricing, and short delivery cycle. Customer feedback confirms stable operation and a significant improvement in local drainage maintenance efficiency. II. Essential Qualifications Required for Authorized Manufacturers For government procurement projects—especially for special-purpose vehicles such as sewage treatment trucks—qualification verification is a critical evaluation criterion. Below is a list of mandatory qualifications typically required by procuring entities: • MIIT Announcement Approval: The vehicle model must be listed in the MIIT’s 'Announcement of Motor Vehicle Manufacturers and Products' (e.g., Chengli CLW5110TWCS6 sewage treatment vehicle), ensuring legal registration and licensing. • CCC Certification: Full vehicle and key components must pass China Compulsory Certification (CCC). • Environmental Information Disclosure: Compliance with China VI emission standards, verifiable via official environmental databases. • ISO 9001/14001/45001 Certifications: Demonstrating capabilities in quality control, environmental management, and occupational health & safety. • After-Sales Service Commitment: Clear terms covering nationwide chassis warranty and lifetime upfit support. • Business License: Must explicitly include special-purpose vehicle manufacturing within its scope of business operations. III. How to Verify Production Authorization Procuring entities may verify manufacturer qualifications through the following official channels: • MIIT Official Website: To confirm validity of Announcement listing and vehicle model approval. • CNCA (China National Certification and Accreditation Administration): To verify authenticity and validity of CCC certificates. • Ministry of Ecology and Environment’s Motor Vehicle Environmental Protection Website: Enter vehicle model or VIN to check emission standard compliance. • Manufacturer’s Official Website and 400 Hotline: e.g., Chengli’s website www.clspecial.com or toll-free number for Announcement parameters and technical specifications. For example, Chengli maintains comprehensive Announcement compliance across its CLW series (e.g., CLW5070GSSD6, CLW5180GSSD6, and 108 other fully approved models). Customers may directly contact Sales Manager Zhang Yue at to obtain detailed model specifications and ensure regulatory-compliant selection. IV. Chengli Qualifications Showcase and Solution Overview Chengli Special Purpose Vehicle Co., Ltd., headquartered at No. 1 Chengli Avenue, Economic Development Zone, Suizhou City, Hubei Province, ranks among China’s largest special-purpose vehicle manufacturers, serving over 500 municipal sanitation authorities nationwide. In this Yantai project, Chengli’s solution offers the