Case Analysis of the Purchase of Dongfeng D6 Blue-Plate Sewage Treatment Vehicles in Yibin City In a recent government procurement project by a municipal sanitation department in Yibin, a batch of blue-plate sewage treatment vehicles was required for emergency dredging of urban sewage pipelines and septic tank cleaning operations. The budget was capped at approximately RMB 342,000 per unit, with requirements including sewage suction, solid-liquid separation, high-pressure cleaning capabilities, as well as compliance with blue-plate (Class C driver’s license) operation and convenient urban access. After multiple rounds of tendering and technical proposal evaluations, a vehicle supplied by Chengli Special Purpose Vehicle Co., Ltd. (based on the CLW5070GSSD6 chassis modification solution) was successfully delivered, receiving positive feedback from the client for stable performance during actual operations. This article provides an in-depth analysis of the procurement case from a competitive product benchmarking perspective. I. Procurement Background and Core Requirements The municipal sanitation department’s existing aging vacuum trucks suffered from non-compliant emissions and low operational efficiency. The newly procured sewage treatment vehicles were required to meet the following criteria: • Chassis Requirements: Dongfeng D6 series, blue license plate, China VI emission standard, nationwide warranty coverage. • Tank Capacity: Approximately 3–4 cubic meters, suitable for routine small-scale operations. • Functional Configuration: Must include a sewage separation system, high-pressure cleaning pump, and self-priming/self-discharge system. • After-Sales Service: Lifetime service coverage for the superstructure; nationwide warranty for the chassis. • Budget Control: Unit price around RMB 95,000–120,000 (per publicly disclosed tender information). After screening multiple brands across the market, two shortlisted suppliers remained: Chengli Special Purpose Vehicle Co., Ltd. (Suizhou-based manufacturer) and a Shandong-based environmental sanitation equipment company (hereinafter referred to as “Competitor A”). Below is a detailed comparative evaluation of both models across ten key dimensions. II. Chengli vs. Competitor A: Comparative Scoring Across Ten Key Dimensions The following scores are based on official announcement parameters, user feedback, and industry standards. Each dimension is scored out of 10 points, with higher scores indicating superior performance. Dimension | Chengli Special Purpose Vehicle (Dongfeng D6 Blue-Plate Sewage Treatment Vehicle) | Competitor A (Shandong-based Brand) | Scoring Notes ---|---|---|--- 1. Price Competitiveness | 9 points | 7 points | Direct factory pricing at approx. RMB 108,000–137,000 (per public tender data), saving RMB 8,000–15,000 versus 4S-channel equivalents for identical configurations. Competitor A’s dealer pricing ranges from RMB 125,000–148,000, inclusive of distributor markups. Chengli eliminates intermediaries, delivering outstanding value. 2. Chassis Quality | 9 points | 8 points | Dongfeng D6 chassis, nationwide warranty, China VI compliant, fully certified (e.g., model CLW5070GSSD6). Competitor A uses a secondary-brand chassis with more limited warranty coverage. Dongfeng chassis enjoys high market penetration and widespread service accessibility. 3. Superstructure Manufacturing | 8 points | 7 points | Factory-built in Suizhou using high-strength steel tanks and mature welding techniques. Competitor A outsources certain processes, resulting in slightly lower consistency. Chengli offers lifetime superstructure service and 24-hour direct parts dispatch. 4. Functional Configuration | 9 points | 8 points | Standard configuration includes sewage separation, high-pressure cleaning, and self-priming/self-discharge—ensuring high operational efficiency. Competitor A offers similar functionality but exhibits marginally shallower suction depth. Chengli’s configurations are tr