When evaluating a 2-post car lift, the most critical factor is the Lifting Capacity, typically ranging from 9,000 lbs to 15,000 lbs for standard B2B procurement. You must verify the Column Height and Width to ensure compatibility with your facility's ceiling clearance. Look for Symmetric vs. Asymmetric arm designs; asymmetric lifts are preferred for passenger cars as they allow doors to open wider, while symmetric lifts are better for heavy trucks. Additionally, ensure the motor is 220V or 380V (Three-Phase) depending on your local industrial power supply, and check for Dual Hydraulic Cylinders with high-strength Aero-Synchronization Cables.