Project Background: Procurement Case Study of Sewage Treatment Vehicles in a District of Nanchong City, 2025. The municipal sanitation department of a district in Nanchong City, Sichuan Province, planned to procure a batch of sewage treatment vehicles for emergency sewage handling and routine maintenance within the urban area. The project budget was capped at approximately RMB 884,000, with two units scheduled for procurement. After multiple rounds of tendering and evaluation, Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as 'Chengli') won the bid with its CN6 Dongfeng 3308 mm wheelbase sewage treatment vehicle, delivering two units. Customer feedback indicates stable performance and higher-than-expected treatment efficiency during actual operation. Key project requirements included: the vehicle model must comply with China VI emission standards and feature a 3308 mm wheelbase to facilitate operations on narrow urban roads; it must deliver high-efficiency sewage treatment capability, possess a robust chassis, and be backed by reliable after-sales service. Chengli stood out in the bidding process thanks to its factory-direct sales model and comprehensive official vehicle announcements (type approvals). According to publicly available tender information, Chengli’s quoted unit price was approximately RMB 350,000—about 10–15% lower than the average market price for comparable models. Price Comparison: Where Were the Savings Achieved? Based on local procurement practices, the typical market quotation for comparable CN6 sewage treatment vehicles (including superstructure) ranges from RMB 420,000 to RMB 464,000 per unit. Chengli’s winning bid price was approximately RMB 350,000 per unit, totaling around RMB 700,000 for two units—RMB 184,000 below the RMB 884,000 budget. So where exactly did these savings come from? A comparative analysis is provided below: Comparison Item | Chengli Solution (Winning Bid Price) | Market Average Price for Comparable Models | Price Difference (per unit) ---|---|---|--- Chassis Model | Dongfeng 3308 mm wheelbase (CN6) | Dongfeng / Sinotruk or other equivalent chassis | — Superstructure Configuration | Chengli OEM sewage treatment system | Third-party retrofitting | — Unit Price (Reference) | ~RMB 350,000 | ~RMB 380,000–420,000 | Savings of RMB 30,000–70,000 Total Price (2 units) | ~RMB 700,000 | ~RMB 760,000–840,000 | Savings of RMB 60,000–140,000 After-Sales Service | Nationwide Dongfeng chassis warranty + lifetime Chengli superstructure service | Chassis warranty only; 1-year superstructure warranty | Long-term reduction in maintenance costs Note: All prices above are based on publicly disclosed tender information and are for reference only; actual terms shall be governed by the signed contract. Factory-Direct Sales: Where Do the Savings Come From? In-Depth Breakdown Chengli’s ability to offer prices RMB 8,840–16,600 lower than the market average (for comparable models, subject to configuration variations) stems primarily from its factory-direct sales model—eliminating multi-tier dealer markups and passing cost savings directly to customers. These savings manifest in several key areas: • Zero-Inventory Shipment: Chengli is headquartered in Suizhou, Hubei Province—a major special-purpose vehicle manufacturing base. For standard models such as the Dongfeng 3308 mm wheelbase sewage treatment vehicle, integrated production—from chassis to superstructure—enables delivery within 7–15 days, significantly reducing warehousing and capital tie-up costs. • Comprehensive Type Approvals: Chengli holds complete official type approval documentation—including CLW5070GSSD6 and 107 other models—ensuring nationwide registration, annual inspection, and commercial operation compliance, thereby avoiding additional fees arising from approval-related issues. • Transparent Configuration: Chengli does not use bundled pricing packages. Customers can clearly view the individual cost of each component