When evaluating an OEM articulated forklift, the most critical factor is the articulation angle, typically ranging from 210 to 220 degrees, which allows for operation in Very Narrow Aisles (VNA) as small as 1.8 to 2.0 meters. Buyers must verify the rated load capacity (commonly 1.5 to 2.5 tons) and the maximum lift height, which can reach up to 12 meters. Ensure the hydraulic system utilizes high-precision valves for smooth mast control and that the battery capacity (Li-ion or Lead-acid) aligns with your operational shift requirements, ideally offering 8+ hours of continuous runtime.