I. Procurement Background and Operational Requirements In 2025, a municipal sanitation department in Kunming plans to procure a batch of blue license plate, 3 m³ sewer cleaning trucks for rainy-season pipeline desilting operations. Located on the Yunnan-Guizhou Plateau, Kunming experiences concentrated and heavy rainfall during the monsoon season; aging urban drainage networks suffer severe siltation, requiring desilting 8–10 times annually. This places stringent demands on equipment’s high-load operational capability and adaptability to hot-humid environments. The procuring entity explicitly requires vehicles with anti-corrosion coating, durable sealing components suitable for hot-humid conditions, stable performance under frequent rainy-season operation, and compliance with blue license plate (C1 driver’s license) driving regulations—enabling frontline operators to be rapidly deployed. After multiple rounds of tendering and technical evaluation, the Dongfeng double-cab sewer cleaning truck (blue license plate, 3 m³) solution offered by Chengli Special Purpose Vehicle Co., Ltd. was ultimately selected. Approximately five units were delivered and are currently performing well in field operations. Based on authentic tender information from this project (aligned with local government procurement practices), this article provides practical reference for similar procurements—covering configuration selection, value-added optional equipment, and pricing rationale. II. Standard Version vs. Premium Version: Comprehensive Functional Configuration Analysis For this procurement, Chengli offered two mainstream configuration options: Standard Version (meeting routine desilting requirements) and Premium Version (optimized for high-load operation and hot-humid environments). Below is a comparative configuration table based on the Chengli CLW5040TQYD6 model (parameters referenced from the Ministry of Industry and Information Technology’s official announcement): Dongfeng Double-Cab Sewer Cleaning Truck (Blue License Plate, 3 m³): Standard vs. Premium Configuration Comparison Configuration Item Standard Version Premium Version Key Differences Chassis Model Dongfeng DOLICA double-cab, wheelbase 3,308 mm Dongfeng DOLICA double-cab, wheelbase 3,308 mm Identical chassis; differentiation lies in superstructure Tank Capacity 3 m³ (combined freshwater + wastewater tanks) 3 m³ (combined freshwater + wastewater tanks) Identical capacity Tank Material Standard carbon steel, 4 mm thickness Grade 304 stainless steel, 5 mm thickness, with interior anti-corrosion coating Premium version offers ~300% higher corrosion resistance Sealing Components Standard rubber O-rings Heat- and humidity-resistant silicone seals, operating temperature range: −40°C to 200°C Premium version extends seal service life and reduces replacement frequency Vacuum Pump Domestically manufactured water-ring pump, suction rate: 10 m³/h Joint-venture rotary vane pump, suction rate: 15 m³/h, with automatic temperature control Premium version improves operational efficiency by 50% Hydraulic System Single-acting hydraulic cylinder, manual control Double-acting hydraulic cylinder, electro-hydraulic proportional control with overload protection Premium version delivers smoother, safer operation Anti-Corrosion Treatment Standard primer + topcoat Epoxy zinc-rich primer + polyurethane topcoat, full-body electrophoretic coating Premium version extends rust prevention lifespan to over 5 years Additional Accessories Standard suction hose (6 m), filter screen Extended suction hose (10 m), quick-connect couplings, high-pressure cleaning gun Premium version expands operational reach As shown in the table, the Standard Version meets basic desilting needs, whereas the Premium Version features targeted enhancements for Kunming’s hot-humid environment. According to feedback from the procuring entity, relative humidity in Kunming’s rainy season often exceeds 80%, and wastewater contains acidic substanc