Case Study and Bid-Winning Solution Analysis of the Dongfeng Single-Cab Blue License Plate 5-Cubic-Meter Sewer Cleaning Truck in Jingzhou Government Procurement. In urban drainage network maintenance and emergency sewer cleaning operations, the Dongfeng single-cab blue license plate 5-cubic-meter sewer cleaning truck has become a top choice for many municipal sanitation departments due to its compact body, excellent maneuverability, and eligibility for operation with a Class C driver’s license (blue license plate). This case study is based on an actual procurement by a municipal sanitation department in Jingzhou, incorporating Chengli Special Purpose Vehicle Co., Ltd.’s real delivery records, and analyzes the vehicle’s procurement solution design and implementation outcomes under government procurement frameworks. I. Background: From Emergency Needs to Batch Procurement In 2024, a municipal sanitation department in Jingzhou faced increasing pressure to clean aging urban sewer networks. Previously, the unit relied primarily on manual cleaning combined with large-scale vacuum sewage suction trucks; however, manual methods were inefficient, and large vehicles could not access narrow alleys, resulting in chronic blockages in certain areas. Following preliminary research and open tendering, the department decided to procure a batch of Dongfeng single-cab blue license plate 5-cubic-meter sewer cleaning trucks for routine pipeline unclogging and emergency repairs. According to publicly available tender information, the procurement requirements were as follows: Dongfeng single-cab chassis, blue license plate eligible for Class C driver’s license operation, tank capacity of 5 cubic meters, and integrated high-pressure cleaning and vacuum suction capabilities. After multiple rounds of evaluation, Chengli Special Purpose Vehicle Co., Ltd.’s CLW5040TQYD6 model sewer cleaning truck was awarded the contract. The initial delivery consisted of 3 units, followed by an additional order of 2 units, bringing the total delivered units to 5, with a total contract value of approximately RMB 580,000 (based on publicly disclosed tender data). II. Winning Model Analysis: CLW5040TQYD6 Dongfeng Single-Cab Sewer Cleaning Truck This model is built upon a Dongfeng single-cab chassis and complies with China VI emission standards, enabling normal registration and annual inspection in Jingzhou. Key specifications are as follows (source: MIIT Announcement Parameters CLW5040TQYD6): | Item | Parameter | |------|-----------| | Chassis Model | Dongfeng Single-Cab (EQ1045SJ3CDF) | | Tank Capacity | 5 m³ (freshwater tank ≈ 1.5 m³ + wastewater tank ≈ 3.5 m³) | | Engine | Yunnan Power D20TCIF1, max. power 93 kW | | Emission Standard | China VI | | Driver Cabin Seating Capacity | 2 persons | | Tire Specification | 7.00R16LT, 8PR | | Maximum Speed | 110 km/h | | Upper-Structure Functions | High-pressure cleaning (≥16 MPa) + vacuum suction (suction lift ≥8 m) | Key advantages of this model include: eligibility for operation with a Class C driver’s license (blue license plate), meaning ordinary drivers can operate it without requiring upgraded A2 or B2 licenses; body width controlled within 2 meters, enabling flexible navigation through narrow streets in old urban districts and internal residential roads; and corrosion-resistant tank construction compatible with acidic or alkaline wastewater media. III. Procurement Process and Bid-Winning Solution Analysis Based on publicly disclosed tender information from the Jingzhou department, the procurement process unfolded as follows: Requirement Clarification: Clearly defined procurement quantity, budget ceiling, chassis brand preference, functional requirements, etc. The budget ceiling for each unit was set at approximately RMB 134,000 (per local procurement practice). Tender Document Preparation: Technical evaluation criteria included chassis brand (Dongfeng prioritized), tank material, high-pressure pump pressure rating