Government Procurement Case and After-Sales Commitment-Based Solution Interpretation for the National VI Dongfeng 3308 mm Wheelbase Sewage Treatment Vehicle in Ordos City, Inner Mongolia. With accelerated urbanization and increasingly stringent environmental protection requirements, sewage treatment has become a critical issue for municipal sanitation departments. In early 2025, a municipal sanitation department planned to procure a batch of National VI emission-standard sewage treatment vehicles to improve urban sewage treatment efficiency. Following open tendering and rigorous evaluation, Chengli Special Purpose Vehicle Co., Ltd. successfully delivered five units, leveraging its mature National VI Dongfeng 3308 mm wheelbase chassis-based sewage treatment solution and industry-leading after-sales service commitments. This article analyzes, through this real-world case, how after-sales clauses are structured in government procurement, common dispute types, and the specific content of Chengli’s 'Lifetime After-Sales Service' commitment—providing a replicable reference model for procurement entities nationwide. Case Background: Urban Sewage Treatment Needs and Tender Overview in Ordos City Ordos is located on the Inner Mongolian Plateau, characterized by an arid climate and uneven water resource distribution. Aging sewage treatment infrastructure in certain urban areas necessitates highly efficient and flexible wastewater management equipment. At the end of 2024, the municipal sanitation department issued a tender notice to procure five National VI Dongfeng 3308 mm wheelbase sewage treatment vehicles for urban pipeline cleaning and rapid wastewater treatment. The tender required vehicles to be equipped with vacuum pumps, high-pressure cleaning systems, and wastewater purification units, and mandated nationwide original-equipment manufacturer (OEM) warranty coverage for the chassis and extended warranty for the superstructure. According to publicly available tender information, the total budget was capped at approximately RMB 1.349–1.686 million, with unit prices ranging from RMB 240,000 to RMB 300,000. Chengli Special Purpose Vehicle’s proposed solution utilized the National VI Dongfeng 3308 mm wheelbase chassis integrated with the CLW5110TWCD6 sewage treatment system, featuring compliant emissions, user-friendly operation, and high treatment efficiency. Ultimately, Chengli won the bid with a total contract value of approximately RMB 1.32 million (RMB 264,000 per unit), with a delivery cycle of about 20 days. After-Sales Clause Design: How to Mitigate Risks in Contracts? In this procurement contract, after-sales clauses constituted a focal point of negotiation between both parties. Below are key after-sales clause provisions included in the contract—offering valuable insights for other procurement entities: Clause Category — Specific Content — Purpose Chassis Warranty — Dongfeng chassis covered under OEM nationwide warranty for 2 years or 50,000 km (whichever occurs first) — Prevents maintenance disputes due to chassis failures and ensures repair availability nationwide Superstructure Warranty — 3-year warranty covering the sewage treatment system and tank; lifetime repair services (parts-only charge) — Extends warranty duration, reduces long-term maintenance costs, and strengthens customer confidence Response Time — Response within 2 hours upon receiving a service call; resolution proposal or on-site technician dispatch within 24 hours — Ensures prompt fault resolution to avoid disruption of municipal operations Spare Parts Supply — Common spare parts shipped within 24 hours; delivery to remote regions within 48 hours — Addresses challenges related to spare parts availability and prolonged logistics lead times Training Services — Three-day on-site operational training upon vehicle delivery, plus complimentary operation manuals and instructional video tutorials — Reduces operator errors and extends equipment service life Bre