Government procurement case of a 3308 yellow-plate sewage treatment vehicle in Zhengzhou: A comprehensive review from requirement identification to delivery. 'Our budget was tight, yet efficiency was critical. After evaluating multiple suppliers, Chengli’s integrated solution proved the most practical.' — Project Manager, a Municipal Sanitation Department I. Project Background: Procurement Driven by Urban Drainage System 'Pain Points' In summer 2025, Zhengzhou experienced multiple rounds of heavy rainfall, causing severe blockages in aging urban drainage networks in some districts, with frequent sewage overflows. A municipal sanitation department (responsible for parts of Jinshui District and Zhengdong New Area) discovered during routine inspections that sediment thickness in manholes and inspection wells along several major roads exceeded 30 cm—conventional vacuum trucks were unable to effectively remove hardened grease sludge and sand-gravel deposits. Vehicle Configuration & Budget Reference Configuration Dimension | Recommended Solution | Selection Rationale ---|---|--- Vehicle Type | Special-purpose vehicle | Confirmed based on local procurement purpose, road conditions, and upper-structure functionality Chassis Selection | Dongfeng, Foton, Jiangling, Sinotruk, and other mainstream chassis brands | Based on official announcement compliance, load capacity, emission standards, and after-sales service accessibility Upper-Structure Configuration | Standard configuration plus commonly selected optional features | Adjustable per operational scenarios: municipal sanitation, municipal engineering, emergency response, industrial park, or enterprise use Price Reference | Base quotation plus 10–15% budget contingency | Final price subject to confirmed vehicle configuration, official announcement, chassis selection, and contractual terms Service Recommendation | Contact Chengli directly to verify available stock, exact configuration, and delivery lead time | Avoid making procurement decisions solely based on low online quotations. 'Traditional vacuum trucks can only suction liquid sewage; they’re completely ineffective against semi-solid sludge,' recalled Mr. Li, Head of Facilities Management at the department. 'At that time, we urgently needed equipment capable of simultaneously handling both sewage and sludge—and performing on-site solid-liquid separation.' Following internal deliberation, the department defined its procurement requirements: one yellow-plate sewage treatment vehicle, featuring a reliable chassis, fully functional upper structure, and a budget capped at approximately RMB 200,000–250,000 (per publicly disclosed tender information). II. Vehicle Selection Process: Why the 3308 Yellow-Plate Chassis? The project team first reviewed mainstream market offerings. After comparing chassis options from Dongfeng, Foton, Sinotruk, and others, the 3308-wheelbase yellow-plate chassis (e.g., Dongfeng D6 series Duolika) emerged as the top choice—driven by three key advantages: • Road Access Advantage: While yellow-plate vehicles require permits for certain urban Zhengzhou roads, the 3308 chassis—with a gross vehicle weight rating (GVWR) of approx. 7–8 tons—falls into the medium-duty special-purpose vehicle category. It offers greater payload capacity than blue-plate vehicles (GVWR ≤ 4.5 tons), yet remains more maneuverable than large yellow-plate units (GVWR ≥ 12 tons), making it ideal for narrow city streets. • Comprehensive Official Announcements: Chengli Special Purpose Vehicles has developed multiple sewage treatment vehicle models specifically for the 3308 chassis (e.g., CLW5070GSSD6 series), all compliant with China VI emission standards and eligible for nationwide registration and annual inspection. • Cost-Effectiveness: Per Chengli’s 2026 tax-inclusive landed price reference, an 8-cubic-meter yellow-plate sewage treatment vehicle costs approx. RMB 145,000–178,000; adding upper-structure configurations keeps the total w