When sourcing a Dongfeng Van Truck, you must prioritize the engine performance and emission standards. Ensure the vehicle meets Euro IV, V, or VI standards depending on your local environmental regulations. Key technical factors include payload capacity (ranging from 1.5 tons to 20+ tons), cargo box dimensions (length, width, height), and fuel type (Diesel, CNG, or Electric). For long-haul logistics, verify the horsepower (HP) rating and transmission type (Manual vs. AMT) to ensure fuel efficiency and driver comfort.