Government Procurement Case and Bid-Winning Solution Interpretation for Dongfeng's New Sewage Treatment Vehicle in Weinan City Recently, a municipal sanitation department in Weinan City publicly tendered for Dongfeng's new sewage treatment vehicles to address local river remediation and sewer network maintenance needs. According to the public tender information, the budget was capped at approximately RMB 730,000, with plans to procure two specialized vehicles for emergency sewage discharge treatment, urgent pumping and drainage, and sludge-water separation operations. Chengli Special Purpose Vehicle Co., Ltd., leveraging its mature light-duty (blue-plate) solution and extensive experience serving municipal authorities, successfully delivered two Dongfeng-chassis sewage treatment vehicles. This article uses this case as a starting point to conduct an in-depth comparison between blue-plate (C-license) and yellow-plate (B-license) models, analyze operational costs, and detail the technical specifications and applicable scenarios of Chengli’s blue-plate solution—providing reference guidance for other municipal authorities. I. Case Background and Requirements Analysis The Dongfeng new-generation sewage treatment vehicles procured by Weinan City are primarily intended for urban rainwater-sewage mixing, pipeline blockages, and emergency sewage discharge scenarios. Based on local procurement practices, customer feedback indicates that traditional yellow-plate (B-license) models—though offering larger tank capacities—require drivers holding Class B or higher licenses, and incur significantly higher annual insurance premiums, vehicle and vessel taxes, and maintenance expenses, resulting in elevated operational costs. In contrast, blue-plate (C-license) models offer key advantages including: operability with a standard C1 driver’s license, unrestricted urban access, and lower maintenance costs—making them an increasingly preferred choice among municipal authorities. Chengli’s blue-plate solution (e.g., model CLW5070GSSD6) balances regulatory compliance and practicality, ultimately securing the bid. II. Blue-Plate (C-License) vs. Yellow-Plate (B-License): Core Comparison To assist procurement entities in clarifying vehicle selection criteria, the following comparison covers driver licensing requirements, operational costs, and application scenarios—based on parameters published by the Ministry of Industry and Information Technology (MIIT) and Chengli’s product database (e.g., model CLW5070GSSD6). Comparison Dimension Blue-Plate (C-License) Version Yellow-Plate (B-License) Version Driver License Requirement C1 license sufficient (low entry barrier) B2 or higher license required (challenging driver recruitment) Gross Vehicle Weight / Curb Weight Gross weight ≤ 4.5 tons; curb weight approx. 3.5 tons (reference: CLW5070GSSD6) Gross weight ≥ 8 tons; curb weight approx. 5 tons Tank Capacity Approx. 3–5 m³ (suitable for routine emergency response) Approx. 8–12 m³ (ideal for large-scale operations) Engine Power Approx. 85–110 hp (Dongfeng chassis compatible) Approx. 130–180 hp Annual Insurance Cost Approx. RMB 3,000–5,000 (market reference) Approx. RMB 8,000–12,000 Vehicle and Vessel Tax Approx. RMB 600–1,000/year Approx. RMB 2,000–4,000/year Urban Access Restrictions Unrestricted in most cities (blue-plate advantage) Restricted in some cities or requiring special permits Annual Maintenance Cost Approx. RMB 8,000–12,000 (high parts commonality) Approx. RMB 15,000–25,000 (more specialized components) Applicable Scenarios Emergency sewage discharge and small-scale dredging in residential communities and streets Large rivers, industrial parks, and centralized treatment stations Representative Delivery Cases 10 units of 5-m³ water-sprinkling trucks delivered to Henan Sanitation Bureau (by Chengli) 4 units of cleaning & suction sewage trucks delivered to Sichuan Municipal Authority (by Chengli) Case Insight: Weinan City’s current procurement...