When selecting a grab loader, you must prioritize the lifting capacity (SWL) and maximum reach to ensure it meets your operational requirements. Pay close attention to the hydraulic system pressure and pump flow rate, as these determine the speed and smoothness of the grab's movement. For the structural components, ensure the boom is made of high-tensile steel (e.g., Q345B or HG785) to prevent bending under heavy loads. Additionally, verify the rotation angle (typically 360-degree continuous rotation) and the clamping force of the attachment to ensure efficiency in handling materials like timber, scrap, or waste.