Government Procurement Case and Bid-Winning Solution Analysis for the CN6 Dongfeng 3308 mm Wheelbase Sewage Treatment Vehicle in Taizhou — A municipal sanitation department in the Taizhou region recently launched a procurement project for CN6-emission-standard Dongfeng sewage treatment vehicles with a 3308 mm wheelbase. The project aims to enhance local sewage pipeline treatment capacity and meet high-load operational demands during the rainy season. This article provides a detailed analysis—covering pre-tender preparation, technical specification drafting, and bid-winning solution interpretation—based on a real government procurement case, supporting efficient procurement by relevant entities. Chengli Special Purpose Vehicle Co., Ltd., as one of China’s largest special-purpose vehicle manufacturers, maintains a product database of 946 models spanning 44 categories—including water sprinklers, garbage trucks, and sewage treatment vehicles. For this procurement, Chengli offers complete official parameters (e.g., model CLW5070GSSD6) and comprehensive after-sales support, serving over 500 municipal sanitation units nationwide. For inquiries, please contact Sales Manager Zhang Yue at or call the official hotline: . I. Pre-Tender Preparation: Clarifying Requirements and Budget 1. Requirement Analysis: Why Choose the Dongfeng 3308 mm Wheelbase? The Dongfeng 3308 mm wheelbase chassis offers the following advantages: • Adaptability: Its moderate wheelbase enables maneuverability in narrow urban streets and complex road conditions—ideal for sewage pipeline inspection. • Load Capacity: Equipped with a CN6-compliant engine, it delivers ample power and supports sewage tanks ranging from 3 to 16 m³, meeting routine sludge removal needs. • Maintenance Convenience: Dongfeng chassis enjoy nationwide warranty coverage and abundant spare parts availability, reducing long-term operating costs. 2. Budget Control: Reference Public Tender Data Based on local procurement practices, typical budget ranges for similar equipment in Taizhou are as follows: • Blue-plate 5 m³ sewage treatment vehicle: ~¥112,000–¥132,000 • Yellow-plate 8 m³ sewage treatment vehicle: ~¥166,000–¥204,000 • 12 m³ sewage treatment vehicle: ~¥227,000–¥281,000 • 15 m³ sewage treatment vehicle: ~¥275,000–¥342,000 These figures are derived from publicly available tender data; final budgets are subject to local fiscal approval. As a direct manufacturer, Chengli eliminates intermediaries—offering savings of ¥8,000–¥15,000 versus 4S-channel pricing for identical configurations, optimizing budget utilization. II. Drafting the Technical Specification Document: Key Parameters and Acceptance Criteria The technical specification document forms the core of tender documents and directly influences bid quality. Given Taizhou’s humid, subtropical climate, the following aspects require particular emphasis: 1. Anti-Corrosion Coating: Addressing High Humidity and Coastal Conditions Taizhou’s coastal location entails high humidity and significant salt fog corrosion risk. The technical specification must explicitly require: • Tanks and piping systems coated with epoxy zinc-rich primer + polyurethane topcoat, with salt fog resistance ≥1,000 hours. • Chassis frame hot-dip galvanized to ensure rust-free performance for 10 years. Chengli offers fully transparent configuration options—no hidden fees—and customizes corrosion-protection levels per customer requirements. 2. Seal Durability in Humid, Hot Environments Frequent rainy-season operations accelerate seal aging. The technical specification shall mandate: • All seals made from high-temperature-, oil-, and hydrolysis-resistant nitrile rubber (NBR) or fluorocarbon rubber (FKM), with service life ≥5 years. • Dual-seal design at pump and valve connection points to prevent leakage.