Case Study: Procurement of a Sewer Cleaning Truck by a District Urban Management Bureau in Jilin — A Full-Process Analysis from Requirement Identification to Delivery. In Northeast China, maintenance of urban drainage systems is a top priority for municipal sanitation departments. In 2025, a district urban management bureau in Jilin planned to procure a Dongfeng single-cab, blue license plate, 5-cubic-meter sewer cleaning truck to address silt removal needs in aging urban pipe networks. The vehicle was required to operate efficiently in narrow alleys, be drivable with a Class C driver’s license, and feature high-efficiency suction and self-unloading capabilities. After multiple rounds of technical evaluation and open tendering, the CLW5070GSSD6 model manufactured by Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as 'Chengli') — built on a Dongfeng single-cab chassis — was selected and delivered. This article provides an in-depth analysis of the procurement case from the perspectives of component procurement, pricing transparency, and after-sales service. I. Consumable Parts List: Hidden Cost Considerations in Government Procurement In sewer cleaning truck procurement, long-term maintenance costs for consumable parts constitute a critical factor that procuring entities must evaluate — beyond the initial vehicle purchase price. Based on the official technical specifications and publicly released tender documents for the CLW5070GSSD6 model provided by Chengli, key consumable parts include: • Suction hose and sealing components: Used to connect the tank to the suction inlet; rubber components are prone to aging under Northeast China’s low winter temperatures — quarterly inspection is recommended. • Hydraulic oil filter element: Ensures hydraulic system cleanliness and prevents cylinder jamming; replacement is typically required every 500 operating hours. • Vacuum pump gasket: Directly affects suction efficiency; if reduced suction force is observed, this component should be prioritized for inspection. • Tank anti-corrosion coating: The 5-cubic-meter tank (approx. 3.5-ton effective capacity) requires periodic reapplication of anti-corrosive paint to prevent chemical corrosion. • Chassis tires and brake pads: The Dongfeng single-cab chassis is covered under nationwide warranty; however, overloading or operation on poor road conditions accelerates wear. Pricing Transparency Analysis: In traditional 4S dealership channels, these components are often quoted as bundled packages, introducing budget uncertainty for procuring entities. As a direct manufacturer, Chengli provides a fully transparent spare parts list, with indicative unit prices as follows: suction hose (including couplings) ≈ RMB 800 per set; hydraulic filter element ≈ RMB 150 per piece; vacuum pump gasket ≈ RMB 60 per piece. Compared to 4S channels, per-maintenance cost savings range from 15% to 25%. II. Chengli’s 24-Hour Direct-Shipment Service: Emergency Support for Northeast China Given Jilin’s severe winter climate, equipment failure of a sewer cleaning truck can significantly delay pipeline clearance operations. For this procurement, Chengli offered a comprehensive support package: 'Nationwide Chassis Warranty + Lifetime Upfit Service', with its 24-hour direct-shipment service as the core highlight: • Parts Inventory: Chengli’s Suizhou factory maintains full inventory of CLW5070GSSD6-specific components, including hydraulic cylinders and complete vacuum pump assemblies. • Shipment Timeliness: Standard logistics from Suizhou, Hubei to Changchun, Jilin takes approximately 48 hours; urgent orders can be expedited for delivery within 24 hours — with shipping costs borne by Chengli (per terms stipulated in the publicly disclosed tender contract). • Remote Technical Guidance: For simple repairs (e.g., gasket replacement), Chengli provides video-based remote assistance to minimize vehicle downtime. Compared to 4S channels — which typically require parts