When sourcing a 4-way pallet truck, the most critical factor is the load capacity, typically ranging from 2,000kg to 3,000kg. Unlike standard trucks, you must verify the fork dimensions and entry height to ensure compatibility with your specific pallet types. Look for reinforced steel frames and high-quality hydraulic pumps (preferably integrated casting) to prevent oil leaks. Additionally, check the turning radius and the efficiency of the lateral movement mechanism, which allows the truck to move sideways in narrow aisles.