I. Case Background: Sewer Cleaning Truck Procurement Requirement of a Municipal Sanitation Department in Huizhou City In 2025, a municipal sanitation department in Huizhou City launched a procurement program for sewer cleaning trucks to address urban drainage network desilting needs. The project required blue-plate vehicles (drivable with a Class C1 driver’s license), built on Dongfeng double-cab chassis, with a tank capacity of 3 cubic meters—primarily intended for desilting operations in urban roads, residential communities, and industrial parks. The budget was capped at approximately RMB 137,000 per unit (based on publicly available tender information); two units were to be procured, with delivery required within 30 days after contract signing. The department required vehicles to meet the following conditions: compliance with official vehicle announcements, eligibility for registration nationwide, Dongfeng chassis covered by nationwide warranty, and lifetime after-sales service for the superstructure. After evaluating multiple suppliers, the department ultimately selected Chengli Special Purpose Vehicle Co., Ltd.’s Dongfeng double-cab, blue-plate, 3-cubic-meter sewer cleaning truck. II. Winning Model Specifications and Solution Overview The winning model is a blue-plate, 3-cubic-meter sewer cleaning truck modified by Chengli Special Purpose Vehicle Co., Ltd. based on a Dongfeng chassis. Its reference announcement model number is CLW5040TQY6 (subject to final official announcement). Key specifications are as follows: | Configuration Item | Parameter / Description | Remarks | |---------------------|--------------------------|---------| | Chassis Brand | Dongfeng | Double-cab cab, seating capacity for 5 persons | | Emission Standard | China VI | Eligible for registration nationwide | | Tank Capacity | 3 m³ | Effective usable volume approx. 2.8 m³ | | Gross Vehicle Weight (GVW) | 4,495 kg | Drivable with Class C1 license | | Engine Power | Approx. 85 kW | Original Dongfeng engine | | Cleaning Functions | High-pressure jetting + vacuum suction + self-dumping | Multi-functional use | | Superstructure Manufacturer | Chengli Special Purpose Vehicle | Lifetime after-sales service | | Delivery Lead Time | Approx. 15 days | Standard model; zero-inventory dispatch | | Reference Landed Price | Approx. RMB 115,000/unit | Including tax and freight | This model utilizes an original Dongfeng chassis equipped with a China VI-compliant engine—ensuring ample power and environmental compliance. The superstructure, independently manufactured by Chengli, features a high-pressure cleaning pump, vacuum suction system, and self-dumping mechanism, enabling efficient pipeline unclogging and sludge removal. Its blue-plate configuration allows operation by drivers holding only a Class C1 license—reducing staffing requirements. III. Core Advantages of the Winning Proposal In this case, Chengli Special Purpose Vehicle’s winning proposal centered on three key strengths: 1. Comprehensive Certifications & Nationwide Registration Eligibility: The vehicle carries an official MIIT (Ministry of Industry and Information Technology) announcement (e.g., model CLW5040TQY6), enabling seamless registration, annual inspection, and commercial operation licensing in Huizhou and all other Chinese cities—eliminating post-purchase administrative complications for end users. 2. Factory-Direct Supply & High Cost-Effectiveness: As a direct manufacturer, Chengli bid without intermediary dealers. According to internal benchmark data, this approach delivers savings of approximately RMB 8,000–15,000 per unit compared to 4S dealership channels. The awarded unit price of ~RMB 115,000 is significantly lower than prevailing market quotations for comparable configurations (per local procurement norms). 3. Robust After-Sales Support: Dongfeng chassis benefits from nationwide warranty coverage; Chengli provides lifetime after-sales service for the superstructure. Customer feedbac