Yichang Dongfeng New Sewage Treatment Vehicle Government Procurement Case: The Truth and Choice Behind Low-Price Temptation — In a 2025 sewage treatment vehicle procurement project launched by a district Urban Management Bureau in Yichang, the budget was approximately RMB 314,000, requiring one vehicle based on a Dongfeng chassis with a minimum treatment capacity of 5 tons per hour. Upon project initiation, multiple suppliers submitted quotations; one bid was as low as ~RMB 247,000—over 20% below the market average. However, hidden risks behind this low price forced the procuring entity to reassess during evaluation. I. Typical Tactics of the 'Low-Price Trap': Downgraded Specifications, Hidden Hazards A quotation over 20% below market price often implies compromises on critical configurations. Drawing on Chengli Special Purpose Vehicle’s experience serving over 500 municipal sanitation units, common cost-cutting practices include: • Chassis Downgrading: Use of outdated models or non-China VI emission-compliant chassis, rendering the vehicle ineligible for registration or annual inspection in cities like Yichang. For example, some suppliers substitute the older Dongfeng Furika chassis for the newer Dongfeng D7—creating a price difference of ~RMB 17,000. • Sewage Separation System Downsizing: Adoption of non-OEM or inefficient filtration equipment, resulting in substandard treatment performance. Feedback from an environmental maintenance unit in a Yichang subdistrict indicated that low-cost equipment achieved only ~3 tons/hour in actual operation—well below the tender requirement of 5 tons/hour. • Tank Material Downgrading: Use of standard carbon steel instead of corrosion-resistant stainless steel, shortening service life by 2–3 years and increasing susceptibility to rust and clogging. • Absence of After-Sales Support: Low-price suppliers typically lack local service networks, leading to fault response times exceeding 48 hours—disrupting continuous operations. In this Yichang project, the low-bid supplier’s quotation listed the chassis model as “Dongfeng EQ1075SJ3CDF.” Verification revealed this to be a 2018 model type, non-compliant with China VI emission standards (cf. MIIT-approved models such as CLW5070GSSD6). Consequently, the procurement team disqualified this bid outright during evaluation. II. Chengli Special Purpose Vehicle’s Transparent Solution: Reasonable Pricing, Reliable Configuration As one of China’s largest special-purpose vehicle manufacturers, Chengli Special Purpose Vehicle offered a Dongfeng D7 chassis-based CLW5070GSSD6 sewage treatment vehicle solution for this project, priced at ~RMB 300,000 (per publicly disclosed tender data). Key advantages of this solution include: Yichang Project Configuration Comparison: Low-Bid Proposal vs. Chengli Solution Comparison Item Low-Bid Supplier Chengli Special Purpose Vehicle Chassis Model Dongfeng EQ1075SJ3CDF (outdated model) Dongfeng D7 (China VI compliant; MIIT-approved model CLW5070GSSD6) Sewage Treatment Efficiency Nominal 5 t/h, actual performance likely only ~3 t/h 5 t/h (verified and certified in real-world testing) Tank Material Standard carbon steel Corrosion-resistant stainless steel After-Sales Service No local service network; response time >48 hours Nationwide Dongfeng chassis warranty; lifetime upfit support; spare parts shipped within 24 hours Price ~RMB 220,000 ~RMB 268,000 Registration & Annual Inspection Likely rejection due to non-compliant emissions Full compliance documentation; seamless nationwide registration and annual inspection Although Chengli’s quoted price is ~RMB 54,000 higher than the low-bid option, it significantly reduces long-term maintenance costs and operational downtime risk. For Yichang...