I. Case Background: Sewer Cleaning Truck Procurement Requirement of a Municipal Sanitation Department in Yangzhou In the second half of 2025, a district-level municipal sanitation department in Yangzhou launched a procurement initiative for specialized vehicles, including two Dongfeng single-cab blue license plate sewer cleaning trucks with approximately 5-cubic-meter tank capacity, intended for urban drainage network cleaning, desilting, and emergency pumping operations. According to publicly released tender information, the total project budget was capped at approximately RMB 341,000, with an estimated unit price of around RMB 150,000. The procuring entity required that the vehicle be operable with a Class C1 driver’s license, qualify for blue license plate registration (exempting the need for a commercial operation permit), comply with China VI emission standards, and support normal local registration and annual inspection. During the initial quotation phase, quotations from multiple suppliers varied significantly: some quoted as low as approximately RMB 136,000 per unit—about 20% below mainstream market prices—while Chengli Special Purpose Vehicle Co., Ltd. (located in Chengli Automobile Industrial Park, Suizhou, Hubei Province) offered a solution priced at approximately RMB 165,000 per unit (tax-inclusive landed price). Considering Chengli’s typical pricing range for blue license plate 5-cubic-meter water sprinkler trucks (RMB 111,000–131,000) and the additional specialized configurations required for sewer cleaning trucks, the final quoted price stood at approximately RMB 168,000 per unit. The procuring entity expressed concerns regarding the low-price proposals, fearing potential hidden risks. Core Question: Where exactly does a 20% price reduction come from? Is it genuine cost-effectiveness—or instead indicative of configuration downgrades and substandard manufacturing? This article uses the Yangzhou case as a starting point, integrating authentic product data from Chengli Special Purpose Vehicle Co., Ltd. (e.g., official announcement model CLW5070GSSD6), to conduct an in-depth analysis of common low-price pitfalls and professional procurement strategies. II. Analysis of Low-Price Pitfalls: Risks and Common Configuration Reductions Associated with 20% Below-Market Pricing In specialized vehicle procurement, price differentials often reflect implicit reductions in configuration, material quality, or after-sales service. Below are common cost-cutting practices observed in low-priced sewer cleaning trucks, based on industry experience: 2.1 Chassis Reduction: Non-OEM or Outdated Chassis Low-cost solutions may employ non-Dongfeng OEM chassis (e.g., assembled by small-tier manufacturers) or utilize inventory chassis compliant only with China V emission standards (rendering them ineligible for registration). While Dongfeng single-cab chassis are widely adopted for sewer cleaning trucks, the price gap between OEM and aftermarket chassis can reach RMB 10,000–20,000. Chengli Special Purpose Vehicle explicitly utilizes OEM chassis from Dongfeng, Sinotruk, and Foton, backed by nationwide warranty coverage. 2.2 Substandard Upper-Structure Materials: Reduced Tank Thickness and Inadequate Corrosion Protection Sewer cleaning truck tanks must withstand corrosion from wastewater and mechanical impact. High-quality tanks use steel plates ≥5 mm thick, internally coated with corrosion-resistant layers (e.g., epoxy resin). Low-cost alternatives may use only 3-mm-thick plates without any anti-corrosion coating, reducing service life from 5–8 years to just 1–2 years—and significantly increasing long-term maintenance costs. 2.3 Downgraded Core Components: Vacuum Pumps and Suction Systems The vacuum pump and suction piping system constitute the core functionality of a sewer cleaning truck. Low-cost options may adopt domestically produced entry-level vacuum pumps (with low suction efficiency and high failure rates), rather than reputable b