Yueyang Municipal Government Procurement Case for EHY5045TWCE6 Sewage Treatment Vehicle (Model 3308): The Low-Bid Trap and Rational Decision-Making. In 2025, a municipal sanitation department publicly tendered for a batch of sewage treatment vehicles, model EHY5045TWCE6, with a budget capped at approximately RMB 331,000. The tender notice indicated that the lowest bid was about 20% below the market average price, triggering concerns among the procuring entity regarding configuration and quality. This is not an isolated case—in sanitation vehicle procurement, low-bid bidding frequently entails specification reductions and cost-cutting on critical components, ultimately leading to high equipment failure rates and sharply increased maintenance costs. Drawing upon Chengli Special Purpose Vehicle’s proven delivery experience in similar projects, this article analyzes common tactics behind the low-bid trap and explains how transparent pricing and verified technical parameters ensure fair and reasonable value. The Low-Bid Trap: Potential Risks of Bids Approximately 20% Below Market Price In government procurement, low-bid bidding may appear to save budget, yet it conceals multiple hidden risks. For the EHY5045TWCE6 sewage treatment vehicle, bids approximately 20% below market price typically stem from the following practices: • Chassis Downgrading: Use of non-OEM or outdated chassis models—e.g., alternatives to mainstream brands such as Dongfeng or Sinotruk—resulting in poor stability and difficult maintenance. • Superstructure Simplification: Reduction or omission of critical components—including vacuum pumps, filtration systems, or tank wall thickness. For example, reducing tank wall thickness for a 3-cubic-meter suction sewage vehicle from 4 mm to 2 mm steel plate shortens service life by over 50%. • Non-Compliant Vehicle Announcements: Use of non-China VI-compliant or obsolete announcement models, hindering registration and annual inspection and increasing long-term compliance costs. • Inadequate After-Sales Support: Absence of nationwide chassis warranty or lifetime superstructure service, leading to prolonged repair cycles and elevated repair expenses. According to real-world cases documented in Chengli’s knowledge base, a district urban management bureau once procured five-cubic-meter water-sprinkling trucks at a budget of ~RMB 108,000—below Chengli’s 2026 tax-inclusive landed price range of RMB 108,000–127,000 for blue-plate five-cubic-meter water-sprinkling trucks. However, within six months of operation, the units suffered pump leakage and tank corrosion, accumulating repair costs exceeding RMB 30,000—far surpassing the initial cost savings. Therefore, bids more than 20% below market price warrant serious caution. Common Specification Reduction Tactics: Industry-Wide Issues Illustrated by EHY5045TWCE6 In procurement of the EHY5045TWCE6 sewage treatment vehicle, specification reduction may manifest as follows: • Tank Material: Substitution of standard carbon steel for corrosion-resistant stainless steel, shortening service life and increasing maintenance frequency. • Pump System: Use of low-power or refurbished pumps, reducing treatment efficiency by over 30%. • Control System: Simplified electronic control modules, resulting in complex operation and high failure rates. • Omission of Standard Accessories: Exclusion of spare tires, toolboxes, or warning lights—compromising practicality and safety. In similar projects—for instance, the supply of four cleaning/suction sewage vehicles to a municipal authority in Sichuan Province—Chengli Special Purpose Vehicle maintains full configuration transparency and avoids bundled pricing. For example, the CLW5070GSSD6 water-sprinkling truck features a Dongfeng chassis, China VI emissions compliance, tank wall thickness meeting official announcement standards, and OEM pumps and electronic control systems—ensuring stable performance. Customer feedback indicates these units remain in exce