Bengbu National VI Dongfeng Sewage Treatment Vehicle Procurement Case: Detailed Analysis of Efficiency Improvement and Cost Control In the municipal sanitation sector, the selection of sewage treatment vehicles directly impacts daily operational efficiency and long-term operating costs. Recently, a municipal sanitation department (hereinafter referred to as 'the client') procured a batch of Dongfeng sewage treatment vehicles with 3308 mm wheelbase and National VI emission standard through public tendering to enhance urban sewage treatment capacity. This article analyzes, based on actual operational data provided by the client, efficiency improvements, workforce optimization, and cost reductions before and after vehicle deployment, while also explaining key considerations in the procurement plan. For further information on vehicle models or procurement solutions, please contact Chengli Special Purpose Vehicle Co., Ltd. official hotline: , or Sales Manager Zhang Yue: . I. Procurement Background and Plan Overview The client’s existing sewage treatment equipment had aged significantly, resulting in low operational efficiency and failure to meet the latest environmental emission standards. After multiple rounds of technical evaluation and feasibility studies, the client finalized its decision to procure sewage treatment vehicles built on the Dongfeng chassis with 3308 mm wheelbase and compliant with National VI emission standards. According to publicly available tender documents, the client selected Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as 'Chengli') as the supplier, primarily based on the following factors: • Chassis Compatibility: Dongfeng chassis are covered by nationwide warranty services, with extensive service network coverage ensuring rapid after-sales response. • Complete Regulatory Approvals: Chengli vehicle models (e.g., CLW5070GSSD6) possess full Ministry of Industry and Information Technology (MIIT) type approvals, enabling seamless registration, annual inspection, and commercial operation licensing across China. • Direct Factory Sales: As a manufacturer, Chengli eliminates intermediaries; for identical configurations, its pricing is approximately RMB 8,000–15,000 lower than that offered by authorized 4S dealerships, allowing greater budget flexibility. Based on local procurement practices, the unit price for this batch of vehicles ranged between RMB 280,000 and RMB 350,000 (tax-inclusive landed cost), subject to configuration options and optional equipment. The procurement plan emphasized 'transparent configuration' and 'no bundled pricing', ensuring rational allocation of budgetary resources. II. Performance Comparison Before and After Deployment Following the deployment of three Dongfeng sewage treatment vehicles with 3308 mm wheelbase, the client conducted a six-month operational tracking study. Key performance indicators are summarized below: Comparison Item Old Equipment New Equipment (National VI Dongfeng 3308) Change Rate Average Daily Sewage Treatment Volume (tons) ~80 tons ~150 tons +87.5% Time per Operation (hours) 4–5 hours 2–3 hours –40% Staffing Requirement (persons/vehicle) 3 persons 2 persons –33% Monthly Maintenance Cost (RMB/vehicle) ~RMB 2,500 ~RMB 800 –68% Fuel Consumption (L/100 km) ~18 L ~14 L (optimized for National VI) –22% Note: Data sourced from the client’s operational records; for reference only. Actual performance may vary depending on working conditions and operator habits. III. Increased Daily Throughput and Workforce Optimization Prior to introducing the new vehicles, the client required three aging units operating simultaneously to barely meet daily treatment demands—and frequent breakdowns often caused delays. After deploying the new vehicles, only two units are now sufficient to achieve the same workload, increasing average daily throughput from approximately