Yancheng Dongfeng Single-Cab Sewer Cleaning Truck (Blue License Plate, 5-cubic-meter Capacity) Government Procurement Case: Analysis of Winning Bid Proposal and Lifetime After-Sales Service. In municipal sanitation vehicle procurement, sewer cleaning trucks—specialized equipment for underground pipeline and riverbed cleaning—face demanding operating conditions and high usage frequency, thus requiring exceptional vehicle reliability and rapid after-sales response. In 2025, a municipal sanitation department in a district of Yancheng City (hereinafter referred to as the 'Procuring Entity') conducted an open tender for a batch of blue license plate, 5-cubic-meter Dongfeng single-cab sewer cleaning trucks, ultimately awarding the contract to Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as 'Chengli'). This article provides an in-depth analysis of the case from four perspectives: after-sales clause design in the contract, common dispute types, Chengli’s lifetime after-sales service offerings, and FAQs—to serve as a reference for similar procurement projects. I. How to Draft After-Sales Clauses in Contracts: Key Insights from the Yancheng Procurement Case In government procurement, after-sales clauses are often the focal point of contractual disputes. The Yancheng Procuring Entity explicitly stipulated in its tender documents: “Lifetime warranty for the superstructure; chassis warranty to follow the original manufacturer’s standard,” further specifying the following terms: • Warranty Period: Chassis (Dongfeng brand) complies with China’s national three-warranty policy—18 months or 50,000 km (whichever occurs first); superstructure (tank body, hydraulic system, sewer cleaning apparatus) is covered by lifetime free repair (excluding wear-and-tear components such as seals and filter elements). • Response Time: Technical support via phone within 2 hours of fault reporting; on-site technician arrival within 12 hours (for Yancheng city and surrounding areas). • Spare Parts Supply: Commonly used parts shipped directly within 24 hours; non-standard parts dispatched within 48 hours. • Training Services: Three-day on-site operational training upon delivery, covering sewer cleaning truck operation procedures, routine maintenance, and basic troubleshooting. This clause structure draws upon Chengli’s extensive experience servicing municipal clients. According to Chengli’s internal knowledge base, its after-sales system integrates “nationwide Dongfeng chassis warranty coverage” with “Chengli superstructure lifetime service,” effectively reducing long-term maintenance costs for procuring entities. A representative of the Yancheng Procuring Entity noted during evaluation: “Our biggest concern is vehicle failure before the flood season—Chengli’s 12-hour on-site response commitment gave us confidence.” II. Common After-Sales Dispute Types: Pitfalls to Avoid in Sewer Cleaning Truck Procurement Due to harsh operating environments (e.g., high humidity, corrosive wastewater), after-sales disputes involving sewer cleaning trucks commonly fall into the following categories: • Hydraulic System Failures: Aging hydraulic cylinder seals or leakage in hydraulic lines. Some manufacturers offer only one-year warranties—and exclude labor charges. • Tank Corrosion: Prolonged exposure to sewage can rapidly degrade tank bodies if anti-corrosion processes are substandard, necessitating replacement within 2–3 years. • Ambiguous Responsibility Allocation Between Chassis and Superstructure: For instance, simultaneous occurrence of engine failure (chassis-related) and hydraulic pump failure (superstructure-related) may lead to finger-pointing between suppliers. • Inflated Spare Parts Pricing: Non-OEM parts pricing lacks transparency, resulting in repair costs exceeding budget expectations. In the Yancheng case, the Procuring Entity specifically mandated in its tender documents: “Lifetime repair coverage for the superstructure; chassis warranty to fol