A municipal sanitation department procurement case in Baotou: Hidden risks behind low-price offers. In 2025, a municipal sanitation department in Baotou planned to procure a batch of National VI Dongfeng 3308 mm wheelbase sewage treatment vehicles, with a budget capped at approximately RMB 398,000. During the public tender process, a supplier quoting around RMB 318,000 attracted attention; however, the procuring entity ultimately selected Chengli Special Purpose Vehicle’s solution priced at approximately RMB 364,000. Why was the lower price rejected? The decision reflects a classic 'low-price trap' logic. According to local procurement practice, bids more than 20% below the market average often conceal significant risks. Although the low-cost proposal listed a 'standard-type sewage treatment system' in its configuration list, it failed to specify filter media material, pump brand, or electrical component parameters. During an on-site inspection, the procuring party discovered that the supplier offered only a basic carbon-steel tank without corrosion-resistant internal lining, and used a domestically produced low-end hydraulic system—significantly deviating from Chengli’s solution, which features the original Dongfeng chassis and core configurations specified in the CLW5070GSSD6 model’s official announcement. Chengli Special Purpose Vehicle Co., Ltd., located in Chengli Automobile Industrial Park, Economic Development Zone, Suizhou City, Hubei Province, specializes in sanitation vehicles—including water sprinklers (3–25 m³), compression garbage trucks (4–18 m³), and vacuum suction trucks (3–16 m³). Chassis options include Dongfeng, Sinotruk, Foton, FAW Jiefang, and Shaanxi Automobile. All models comply with National VI emission standards. After-sales support includes nationwide Dongfeng chassis warranty and lifetime service for Chengli upper structures. Official hotline: ; Sales Manager Zhang Yue: . Common Tactics of the Low-Price Trap: Three Key 'Hidden Pitfalls' In government procurement, low-bid suppliers frequently reduce costs through the following methods—ultimately compromising vehicle service life and operational efficiency: • Tank Material Downgrade: Substituting ordinary carbon steel for corrosion-resistant stainless steel or thickened steel plates shortens tank lifespan by over 30%, especially prone to corrosion and perforation when handling acidic or alkaline wastewater. • Hydraulic & Pump System Downspecification: Using low-power, unbranded sewage pumps reduces suction efficiency and increases clogging risk; low-cost hydraulic valves significantly raise failure rates. • Simplified Electrical & Control Systems: Omitting auxiliary functions such as liquid-level alarms and automatic start/stop controls—or using non-waterproof wiring harnesses—increases maintenance frequency. These cost-cutting measures make the initial purchase price appear attractive, yet result in annual maintenance cost increases of RMB 8,000–15,000 and disrupt operational schedules. By contrast, Chengli’s solutions emphasize full configuration transparency—no bundled pricing—and source all components exclusively from reputable suppliers. For instance, the CLW5070GSSD6 model’s official announcement explicitly specifies critical parameters including effective tank volume and pump head. How Does Chengli Ensure Reasonable Pricing? As a direct manufacturer, Chengli eliminates intermediaries—offering the same configuration at RMB 8,000–15,000 less than 4S-channel prices. In the Baotou case, the final solution included: • National VI Dongfeng chassis with 3308 mm wheelbase, backed by Dongfeng’s nationwide warranty; • Tank fabricated from thickened weathering steel with corrosion-resistant internal coating; • High-quality branded sewage pump and hydraulic system; • Full-vehicle electrical components rated IP67 for waterproofing; • Lifetime upper-structure service and 24-hour direct parts dispatch. Regarding pricing, based on pub