Yangzhou National VI Dongfeng 3308 mm Wheelbase Sewage Treatment Vehicle Government Procurement Case Study and Analysis of Low-Price Traps. In government procurement, sewage treatment vehicles are essential tools for municipal sanitation departments to address black-and-odorous water body remediation, emergency drainage, and sewage collection. Recently, a municipal sanitation department in Yangzhou, Jiangsu Province, issued a procurement tender for National VI-compliant Dongfeng sewage treatment vehicles with a 3308 mm wheelbase, with a budget capped at approximately RMB 318,000 per unit. The vehicles must be equipped with a vacuum pump system and a 2-cubic-meter sewage tank. However, some market quotations—up to 20% below prevailing market prices—have raised customer concerns regarding quality reliability and after-sales service risks. This article analyzes real-world cases, exposes common low-price trap tactics, and demonstrates how Chengli Special Purpose Vehicle Co., Ltd. (located in Suizhou Chengli Automobile Industrial Park, Hubei Province; official hotline: ) ensures fair pricing through transparent configurations and lifelong service support. I. Background and Requirements Analysis The client (a municipal sanitation department) plans to procure two National VI-emission-standard sewage treatment vehicles. The chassis must be a Dongfeng model with a 3308 mm wheelbase; the superstructure must include a high-power vacuum pump, corrosion-resistant tank, and automatic discharge system—intended for routine road floodwater removal and industrial wastewater handling. Based on local procurement practices and publicly available tender data, the prevailing market price for this vehicle type ranges from RMB 240,000 to 300,000 per unit. During bidding, the client received a quotation of approximately RMB 250,000—more than 20% below the market average—prompting concerns over configuration downgrades and long-term maintenance viability. Key requirements include: • Chassis: Dongfeng 3308 mm wheelbase, National VI emission compliance, fully compliant with national environmental standards. • Superstructure: Vacuum pump suction capacity ≥ 30 m³/h; tank material: Q235 carbon steel or 304 stainless steel. • After-sales service: Nationwide chassis warranty, lifetime superstructure repair, and 24-hour spare parts availability. • Delivery lead time: 7–15 days for standard models; urgent delivery required. II. Low-Price Traps: Common Cost-Cutting Tactics Behind Quotations 20% Below Market Price While seemingly cost-effective, low-price proposals often compromise value through the following tactics: • Chassis downgrades: Use of non-OEM modified chassis or outdated engines—resulting in non-compliance with National VI emissions standards, rendering the vehicle ineligible for registration or annual inspection. • Vacuum pump downgrade: Installation of low-power or unbranded pumps—reducing suction efficiency by over 30%, severely impacting operational performance. • Tank material substitution: Replacement of corrosion-resistant stainless steel with ordinary carbon steel—and further reduction in wall thickness—cutting service life to only 2–3 years. • Inadequate after-sales support: No nationwide chassis warranty, incomplete superstructure spare parts inventory, and slow technical response times. • Incomplete regulatory certification: Vehicle not listed in the MIIT (Ministry of Industry and Information Technology) Announcement—preventing legal registration and commercial operation. According to Chengli’s product database (e.g., model CLW5070GSSD6), certified manufacturers provide full MIIT announcements, fully transparent configurations, and avoid opaque ‘package pricing’ schemes that conceal critical details. As one client noted: “We immediately reject any proposal priced more than 20% below market rate—because long-term maintenance costs far outweigh initial savings.” III. How Chengli Ensures Fair Pricing: Real-World Cases and Config