Government procurement case of the 3308 sewage treatment vehicle EHY5045TWCE6 in Changde: Interpretation of the winning bid proposal and after-sales commitments. In municipal sanitation, sewage treatment vehicles serve as critical equipment for environmental remediation; thus, procurement procedures, after-sales terms, and actual operational costs are central concerns for purchasing entities. This article analyzes the procurement of the EHY5045TWCE6 sewage treatment vehicle with a 3308 mm wheelbase by a district-level sanitation department in Changde, interpreting after-sales commitments, common dispute types, and Chengli Special Purpose Vehicle’s lifetime service program—providing reference for similar projects. I. Case Background: The Changde 3308 Sewage Treatment Vehicle Procurement Project In 2025, a municipal sanitation department in Changde procured one sewage treatment vehicle with a 3308 mm wheelbase (model EHY5045TWCE6) via public tender. The vehicle is primarily deployed for emergency handling of urban sewage networks and river basin remediation, requiring compliance with China VI emission standards and featuring high-efficiency suction and solid-liquid separation capabilities. According to publicly available tender information, the project budget was capped at approximately RMB 397,000, with Chengli Special Purpose Vehicle Co., Ltd. emerging as the winning bidder at a unit price of roughly RMB 328,000 (based on local procurement conventions). The significance of this case lies in the vehicle’s classification as a specialized sanitation vehicle, imposing stringent requirements on after-sales response speed, spare parts availability, and technical training. The procurement contract not only specified the delivery timeline (approximately 15 days, due to local production and zero inventory), but also explicitly outlined after-sales provisions to mitigate potential disputes. II. After-Sales Clauses in the Contract: How to Prevent Disputes? In government procurement contracts, after-sales clauses frequently become focal points of contention. For the Changde project, the contractual provisions include the following core elements: • Chassis Joint Warranty Responsibility: Clearly stipulates that the Dongfeng chassis qualifies for nationwide joint warranty coverage; faults occurring within the warranty period shall be addressed by authorized Dongfeng service stations, with Chengli providing coordination support. • Lifetime Upper-Structure Service: Chengli commits to providing lifetime technical support and maintenance services for upper-structure components—including the sewage treatment system, tank body, and pumps—with non-man-made-damage spare parts supplied at cost price. • Response Timeframe: The contract mandates that technical personnel must arrive on-site or provide remote guidance within 24 hours of fault reporting; spare parts shipments shall be dispatched within 48 hours (Changde is approximately 300 km from Suizhou; in practice, delivery can be expedited to within 12 hours). • Training Clause: One complimentary operator training session is provided upon delivery, covering routine maintenance, fault diagnosis, and safety protocols. These provisions effectively prevent common disputes such as 'blame-shifting between chassis and upper-structure providers', 'lack of transparency in upper-structure repair charges', and 'delays in response causing operational downtime'. According to Chengli’s knowledge base, its after-sales system has served over 500 municipal units, and such clauses constitute standard contractual configurations. III. Analysis of Common After-Sales Dispute Types Based on Chengli’s FAQ knowledge base and real-world case feedback, post-procurement disputes involving sanitation vehicles predominantly fall into the following three categories: Dispute Type | Representative Case Example | Chengli’s Resolution Strategy ---|---|--- Ambiguous delineation of responsibilities between chassis and upper s