Government procurement case of the new Dongfeng sewage treatment vehicle in Xinxiang: In-depth analysis from spare parts procurement to winning bid proposal. In North China, with increasingly stringent environmental regulations, demand for sewage treatment has surged explosively. A municipal sanitation department recently completed a procurement project for two units of the new Dongfeng sewage treatment vehicles, with a budget capped at approximately RMB 1.131 million. This case involves not only vehicle selection but also focuses on transparency in spare parts procurement, control of long-term operational costs, and reliability of after-sales service. Based on publicly available tender information and local procurement practices, this article provides an in-depth analysis of the case to serve as a reference for government procurement under budget constraints. I. Project Background and Requirements Analysis The procuring entity is a district urban management bureau responsible for sewage transfer and treatment across multiple industrial parks within its jurisdiction. According to publicly released tender documents, the project requires vehicles equipped with high-efficiency filtration and automatic cleaning functions, and mandates compliance with China VI emission standards. Given budgetary constraints, the client explicitly specified requirements for 'blue-plate classification enabling low-cost operation' and 'transparent spare parts procurement' to avoid hidden post-purchase expenses. After comprehensive evaluation, the client ultimately selected Chengli Special Purpose Vehicle Co., Ltd.’s CLW5070GSSD6 sewage treatment vehicle (built on a Dongfeng chassis). This model features complete official certification (fully compliant with MIIT announcement parameters) and offers the following core advantages: • Blue-plate design: Operable with a Class C1 driver’s license—reducing driver qualification requirements and lowering labor costs. • High-efficiency filtration system: Utilizes multi-stage sedimentation combined with reverse osmosis technology, achieving a treatment capacity of up to 5 tons/hour. • Transparent configuration: Chengli avoids bundled pricing; all component lists are publicly disclosed, enabling customers to select optional equipment as needed. II. Spare Parts Procurement Strategy: Consumable Parts List and Price Transparency In government procurement, the initial vehicle purchase cost represents only the tip of the iceberg—the replacement frequency and pricing of consumable parts often determine total long-term operational costs. For this case, Chengli Special Purpose Vehicle provided a detailed consumable parts list—including filter elements, sealing rings, pump impellers, suction hoses, etc.—with indicative pricing (RMB 60–230 per item, based on local procurement conventions). Compared with 4S-channel procurement, Chengli—as a direct manufacturer—offers savings of approximately RMB 8,000–15,000 for identical configurations. For example, the tax-inclusive landed price of the CLW5070GSSD6 blue-plate 5-cubic-meter sewage treatment vehicle is approximately RMB 111,000–130,000 (based on 2026 reference pricing), whereas 4S dealers typically quote 15% higher. More importantly, Chengli guarantees stable spare parts pricing for three years, preventing budget overruns due to future price increases. The table below compares key differences between Chengli Special Purpose Vehicle (direct factory sales) and 4S channels (intermediaries) regarding spare parts procurement: Comparison Item | Chengli Special Purpose Vehicle (Direct Factory Sales) | 4S Channel (Intermediary) ---|---|--- Spare Parts Price Transparency | Fully disclosed itemized list; no hidden fees | Upcharges of 30–50% on certain components Consumable Parts List | Comprehensive list with indicative pricing provided | Only basic list provided; pricing not transparent After-Sales Response Time | Direct shipment of spare parts within 24 hours | Requires dealer c