详细规格及用途描述 Available in 2 step / 3 step / 4 step LA-02-2 STEP: (W) 300 mm , (H) 600 mm LA-02-3 STEP: (W) 300 mm , (H) 850 mm LA-02-4 STEP: (W) 300 mm , (H) 1090 mm