When selecting a metal hand trolley, the load capacity is the most critical factor. For light-duty warehouse tasks, a capacity of 150kg to 250kg is sufficient, while heavy-duty industrial applications require trolleys rated for 350kg to 500kg+. Material-wise, Steel trolleys offer maximum durability and impact resistance for rough environments, whereas Aluminum trolleys are preferred for their corrosion resistance and lightweight properties, making them ideal for delivery drivers who frequently lift the equipment in and out of vehicles.