... rubber tire absorlute mute when moving without dragging mark, no damage to floor light footed,flexible steer PLA150Y-DXlab ... life is longer than ordinary carriers 8 times, 4, Absolute trackless: without dragging mark, no damage to any floor, (white ... to heating. China trademark patent number:NO.7123966The plate appearance patent number: NO.200830261338.8 4-wheels handcart/trolley with fixed armrest ...