Government Procurement Case and Bid-Winning Solution Analysis for the SINOTRUK Sludge Tipper Truck (24 m³) in Zhengzhou In daily municipal sanitation operations, sludge transportation is a high-frequency, high-intensity task—especially at wastewater treatment plants and river dredging sites—where vehicle payload capacity, sealing performance, and environmental compliance are critically demanding. Recently, a municipal sanitation department in Zhengzhou conducted centralized procurement of sludge tipper trucks, specifying a 24 m³ model built on a SINOTRUK chassis to enhance sludge handling efficiency and reduce operational costs. This article analyzes, through this real-world case, the cost comparison between diesel-powered and battery-electric variants, differences in application scenarios, charging infrastructure requirements, and interprets Chengli Special Purpose Vehicle’s winning bid proposal to support procurement decision-making. Case Background: 24 m³ Sludge Truck Procurement Requirements by a Municipal Sanitation Department in Zhengzhou This department is responsible for sludge removal from multiple wastewater treatment plants across Zhengzhou, with an average daily transport volume of approximately 200 tons—requiring six 24 m³ sludge tipper trucks. Tender specifications mandated high sealing performance (to prevent sludge leakage), robust payload capacity (24 m³ volume), low emissions (compliance with China VI or new-energy standards), and superior after-sales service. After multiple rounds of evaluation, Chengli Special Purpose Vehicle secured the contract with its integrated solution featuring a SINOTRUK chassis and custom-built superstructure. Six units have been delivered and are now deployed across multiple projects, receiving positive customer feedback regarding excellent sealing performance and strong power output. Notably, during procurement, internal deliberations between diesel and battery-electric variants spanned several months. Ultimately, the diesel variant was selected; however, the battery-electric option remained under serious consideration as a contingency plan. Below, we provide a detailed comparative analysis across three dimensions: cost, application scenario, and infrastructure requirements. Diesel vs. Battery-Electric: Cost Comparison Analysis According to publicly available tender information, the unit price of the diesel-powered 24 m³ SINOTRUK sludge tipper truck ranges from RMB 350,000 to 420,000, whereas the equivalent-capacity battery-electric version costs approximately RMB 550,000–650,000. Based on local procurement practices, the initial acquisition cost of the battery-electric variant is about 50%–60% higher. However, the battery-electric version offers clear advantages in operational expenditure. The following table presents a comparative analysis based on 2026 market data (referencing Chengli Special Purpose Vehicle product lines and MIIT-announced technical parameters, e.g., model CLW5180GSSD6): Comparison Dimension | Diesel Version (SINOTRUK Chassis) | Battery-Electric Version (New-Energy Chassis) ---|---|--- Acquisition Cost (Unit Price, per Tender Reference) | ~RMB 380,000 | ~RMB 600,000 Annual Operating Cost (Based on 60,000 km/year) | ~RMB 150,000 (including diesel fuel, maintenance, repairs) | ~RMB 80,000 (including electricity, maintenance, repairs) Annual CO₂ Emissions | ~20 tons | 0 tons (under green electricity scenario) Service Life (Years) | 10–12 years | 8–10 years (accounting for battery degradation) Total Cost (10-Year Cycle) | ~RMB 1,880,000 | ~RMB 1,400,000 Refueling/Recharging Time | 5 minutes (refueling) | 2–3 hours (fast charging) Applicable Scenarios | Long-haul transport, high-frequency operations | Short-haul, fixed-route, nighttime operations As shown in the table, although the battery-electric variant incurs higher upfront investment, its total cost over a 10-year lifecycle is actually lower—saving approximately RMB 480,000. Nevertheless, this munici