Case Study and Bid-Winning Solution Analysis of Changsha Municipal Government Procurement of Dongfeng Dual-Cab Sludge Suction Trucks (Blue License Plate, 3 m³) In the municipal sanitation sector, sludge suction trucks are critical equipment for unclogging drainage networks and removing sediment—procurement demand for such vehicles has risen steadily year-on-year. Recently, a municipal sanitation department in Changsha completed the procurement of a batch of Dongfeng dual-cab sludge suction trucks (blue license plate, 3 m³), aimed at urgently addressing urban waterlogging prevention and pipeline maintenance. This article analyzes the procurement process, vehicle selection, and Chengli Special Purpose Vehicle’s one-stop supply solution based on this real-world case, offering reference for similar procurements. I. Procurement Background and Requirements Analysis Within the jurisdiction of this municipal sanitation department, frequent blockages occur in the drainage systems of older residential communities and major roads. Existing sludge removal equipment can no longer meet daily maintenance requirements. Following internal evaluation, the department determined the need to procure Dongfeng dual-cab sludge suction trucks (blue license plate, 3 m³) to perform the following key tasks: - Removing sludge and sediments from rainwater inlets and inspection chambers; - Supporting high-pressure cleaning trucks in pipeline unclogging operations; - Transporting sludge to designated treatment facilities to prevent secondary pollution. Per local procurement practice, the project budget was capped at approximately RMB 300,000 (based on publicly disclosed tender information), requiring procurement of three blue-license-plate sludge suction trucks, with assurance that all vehicles could be registered, undergo annual inspection, and obtain operating permits in Changsha. Given the complex working environment, a Dongfeng chassis and a China VI-compliant powertrain were specified. II. Vehicle Selection and Technical Specifications After comparing offerings from multiple suppliers, the department selected the Dongfeng dual-cab sludge suction truck (blue license plate, 3 m³) manufactured by Chengli Special Purpose Vehicle Co., Ltd. Built upon a Dongfeng light-duty chassis, the upper-body assembly was independently designed by Chengli. The model reference is CLW5070GSSD6 (sharing the same chassis platform as Chengli’s water-sprinkling trucks; the sludge suction variant is a customized version of this platform). Key specifications are as follows: | Parameter | Specification | |-----------|-------------| | Chassis Brand | Dongfeng | | Cab Configuration | Dual-cab (seats up to 5 occupants) | | Emission Standard | China VI | | Tank Capacity | 3 m³ (approx. 3 tons of sludge) | | Engine Model | Yuchai or Quanchai (configuration-dependent) | | Wheelbase | 3,308 mm | | Upper-Body Functions | Hydraulic lifting, self-dumping, rear-door sealing | | Tire Specification | 7.00R16 steel-belted radial tires | | Gross Vehicle Weight (GVW) | 7,360 kg | | Rated Payload | Approx. 3,000 kg | This model features a dual-cab configuration accommodating the full operation crew, eliminating the need for additional shuttle vehicles. Its 3 m³ tank capacity is optimized for narrow urban streets—ensuring transport efficiency while avoiding overloading risks. The hydraulic self-dumping system enables rapid unloading, and the sealed rear door prevents leakage during transit, meeting environmental protection requirements. III. Procurement Process and Bid-Winning Solution Analysis This procurement was conducted via open tender. As a direct manufacturer supplier, Chengli Special Purpose Vehicle successfully delivered three units, leveraging the following competitive advantages: 1. Direct Manufacturer Sales — Transparent Pricing Chengli offered an all-inclusive, tax-inclusive landed price of approximately RMB 98,000–115,000 per unit (subject to configuration), saving RMB 8,0