Government Procurement Case and Winning Bid Solution Analysis for the Tangshan 3308 Yellow-Plate Wastewater Treatment Vehicle I. Case Background: Wastewater Treatment Vehicle Procurement Requirements in Tangshan City As a key industrial city in North China, Tangshan has continuously increased its environmental protection investment in recent years—particularly in wastewater treatment. According to publicly released tender information, a municipal sanitation department in Tangshan plans to procure a batch of 3308 yellow-plate wastewater treatment vehicles to enhance urban wastewater treatment capacity. This model utilizes a Dongfeng chassis (model CLW5070GSSD6) and features functions including sewage suction, solid-liquid separation, and wastewater purification, making it suitable for municipal pipeline maintenance, river remediation, and emergency sewage discharge scenarios. The procurement budget for this project was controlled within approximately RMB 336,000–560,000 (based on local procurement conventions), requiring compliance with China VI emission standards, complete regulatory documentation, and nationwide registration eligibility. After multiple rounds of evaluation and on-site inspections, Chengli Special Purpose Vehicle Co., Ltd. secured the contract and delivered the vehicles, leveraging its comprehensive product portfolio, high cost-performance ratio, and extensive after-sales service network. II. Vehicle Analysis: Core Technical Specifications of the 3308 Yellow-Plate Wastewater Treatment Vehicle Per the Ministry of Industry and Information Technology (MIIT) official announcement (model CLW5070GSSD6), this vehicle is built on a Dongfeng Automobile Co., Ltd. chassis with a wheelbase of 3,308 mm, rated payload capacity of approximately 3–5 tons, and tank volume ranging from 5–8 m³ (depending on selected configurations). Key features include: • Chassis Advantages: Dongfeng chassis supported by nationwide warranty coverage, dense service network, and timely parts supply—reducing long-term operating costs. • Superstructure Functions: Equipped with high-pressure cleaning system, wastewater recirculation unit, and sludge dewatering system, enabling continuous operation for over 8 hours. • Operational Convenience: Electric controls integrated into the cab with one-touch startup, significantly reducing operator training requirements. • Environmental Compliance: Fully compliant with China VI emission standards, meeting Tangshan’s local environmental regulations. III. Procurement Process: End-to-End Interpretation from Tendering to Delivery This procurement batch was launched in 2025 using an open tender process. Chengli Special Purpose Vehicle submitted a detailed configuration list and pricing proposal, ultimately winning the bid at a unit price of approximately RMB 392,000–504,000 (per publicly available tender data), with a total contract value of roughly RMB 1.5–2 million (covering four units). Following delivery, customer feedback indicated stable field performance—especially during urban pipeline blockage response and emergency sewage discharge operations—where suction efficiency improved by approximately 30% compared to conventional equipment. Chengli’s after-sales team also conducted two on-site training sessions to ensure operators mastered all operational procedures. Key Milestones: • Tender Notice Issued: March 2025 • Bid Opening & Evaluation: April 2025 • Contract Signing: May 2025 • Vehicle Delivery (including license plate registration services): June 2025 • Post-Delivery Follow-up Visit: Within 30 days post-delivery; customer satisfaction rate exceeding 95% IV. Multi-Category Supply Capability: Chengli’s One-Stop Procurement Advantage Notably, in addition to wastewater treatment vehicles, this municipal sanitation department concurrently procured other types of sanitation vehicles—including water sprinklers and compression-type garbage trucks. Chengli Special Purpose Vehicle provided a full-range integra