Government Procurement Case and Bid-Winning Solution Analysis for the EHY5045TWCE6 Sewage Treatment Vehicle (Model 3308) in Hohhot In northern cold regions like Hohhot, winter temperatures frequently drop to -30°C. Municipal sanitation departments face a major concern when procuring sewage treatment vehicles: equipment freezing and failure to start. Recently, a municipal sanitation department in Hohhot acquired the EHY5045TWCE6 sewage treatment vehicle (Model 3308) via public tender, with a budget capped at approximately RMB 341,000 and an average unit price around RMB 280,000 (based on publicly available tender information). However, market quotations for similar models vary significantly—some are over 20% lower than the average. This article uses this case as a starting point to analyze the risks of low-price traps, common cost-cutting practices in configuration, and how Chengli Special Purpose Vehicles ensures both competitive pricing and reliable performance in extreme cold environments. I. Case Background: Procurement Requirements of a Municipal Sanitation Department in Hohhot This department is primarily responsible for urban sewage pipeline maintenance and emergency dredging, requiring one EHY5045TWCE6 sewage treatment vehicle (Model 3308). Key requirements include light curb weight, strong off-road capability, and adaptability to Hohhot’s harsh winter conditions—characterized by extremely low temperatures and frequent sandstorms. Tender specifications (e.g., model CLW5070GSSD6) indicate that the vehicle is built on a China VI-compliant chassis, with a rated payload of approximately 1.5 tons and a tank capacity of about 3.5 m³—ideal for operations in narrow streets. The budget range was set at approximately RMB 318,000–364,000 (in line with local procurement conventions), yet supplier quotations varied widely—from RMB 250,000 to RMB 350,000. II. The Low-Price Trap: Risks Associated with Quotations Over 20% Below Market Average Some suppliers offered quotations more than 20% below the market average—for example, as low as RMB 250,000. Such aggressively low prices often conceal serious risks: • Chassis Downgrades: Use of non-mainstream or obsolete chassis (e.g., phased-out China V units), resulting in inability to register or pass annual inspections nationwide, plus poor hydraulic system performance and weak cold-start capability of the engine. • Reduced Upfit Specifications: Core components—including sewage pumps and vacuum pumps—are downgraded to low-power or refurbished units; hydraulic oil viscosity becomes insufficient in winter, leading to system seizure. • Lack of Insulation and Freeze Protection: Absence of tank insulation layers, electric heating systems, or antifreeze circulation devices causes sewage to freeze at -20°C, rendering the vehicle inoperable. • Inadequate After-Sales Support: Promises of “lifetime after-sales service” are unsubstantiated—no local spare parts inventory, slow response times, and no service center in Hohhot, meaning repairs may take several days. During initial evaluation, the department found that low-priced bids failed to provide complete official technical specifications or winter performance test reports—and promptly disqualified them. III. Common Cost-Cutting Practices: Winter Performance Often Overlooked To reduce costs, low-price suppliers targeting high-cold regions like Hohhot commonly adopt the following measures: • Simplified Hydraulic Systems: Use of standard hydraulic oil instead of low-temperature-grade oil—causing oil solidification at -30°C and failure of lifting and suction functions. • Downgraded Batteries and Starting Systems: Standard lead-acid batteries (not cold-weather variants) are used, resulting in insufficient cranking current and engine failure to ignite. • Omission of Pipeline Insulation: Sewage pipelines lack electric heat tracing or thermal insulation sleeves, leading to ice blockages and reduced operational efficiency. • Emission Standard Fraud: