Government Procurement Case Study: Dongfeng's New Sewage Treatment Vehicle in Shenyang — Price Comparison Decision-Making and Solution Analysis. By the end of 2025, a municipal sanitation department in a district of Shenyang planned to procure two units of Dongfeng’s new sewage treatment vehicles for emergency treatment and routine collection of domestic and industrial wastewater within its jurisdiction. Given that winter temperatures in Shenyang can drop as low as -30°C, equipment startup reliability and operational stability under such low-temperature conditions became the core procurement concern. After two months of research and comparative quotation evaluation, Chengli Special Purpose Vehicle Co., Ltd. was ultimately selected. This article reconstructs the entire price-comparison decision-making process, beginning from receipt of quotations from multiple suppliers. I. Procurement Background and Core Requirements According to publicly released tender information, the unit’s existing aging sewage treatment equipment suffered from high failure rates; during winter, hydraulic oil solidification frequently prevented engine startup. The procurement budget was capped at approximately RMB 1.335 million (for two units), requiring vehicles with Dongfeng’s latest chassis and superstructures equipped with freeze-protection functionality, capable of normal operation at -25°C. Key requirements included: • Freeze-Resistant Startup Performance: Engine preheating system and fuel heating device to ensure rapid cold-start capability. • Low-Temperature Hydraulic Stability: Hydraulic system utilizing low-temperature-resistant seals and specialized hydraulic oil to prevent pipeline freezing and cracking. • Winter Maintenance Program: Provision of at least three years of free winter inspection services, plus 24-hour direct shipment of spare parts. • Complete Vehicle Announcement Documentation: Full compliance with registration and annual inspection requirements, meeting China VI emission standards. II. Quotations Received: Price Comparison Table The procurement team solicited quotations from three suppliers: a local Shenyang dealer, an out-of-province brand manufacturer, and Chengli Special Purpose Vehicle Co., Ltd. In accordance with local procurement practice, all quoted prices included chassis, superstructure, transportation, taxes, and basic maintenance services. Below is the comparative data (based on publicly available tender information): Supplier | Vehicle Configuration | Unit Price (RMB 10,000/unit) | Total Price (Two Units, RMB 10,000) | Delivery Lead Time (Days) | Remarks ---|---|---|---|---|--- Shenyang Local Dealer A | Dongfeng Chassis + Domestic Superstructure, Standard Configuration | ~55 | ~110 | 30–45 | No freeze-protection upgrade package; additional winter after-sales service fees apply Out-of-Province Brand Manufacturer B | Dongfeng Chassis + Imported Superstructure, with Heating System | ~65 | ~130 | 60–90 | Exceeds budget; extended delivery timeline Chengli Special Purpose Vehicle | Dongfeng Chassis + Chengli Superstructure, Full Freeze-Protection Configuration, Lifetime After-Sales Support | ~58 | ~116 | 15–20 | Factory-direct sales, including three-year winter inspection program From a pricing perspective, Chengli’s solution offered a unit price of approximately RMB 645,000 and a total price of RMB 1.16 million—well within budget. While Dealer A’s unit price was lower, its lack of freeze-protection upgrades could lead to higher long-term maintenance costs. Manufacturer B exceeded the budget and had an excessively long delivery schedule, failing to meet urgent operational needs. III. Configuration Comparison Analysis: Why Chengli’s Solution Is Superior The procurement team requested detailed configuration specifications from all three suppliers, focusing specifically on components critical to winter performance. Chengli’s proposal—based on Dongfeng chassis (e.g., model CLW5070GSSD6) and its self-developed superstruct