1.Smooth operation, low noise. 2.Several types. 3.Easy dismantling and install . 4.High quality and competitive price 1.Widely employed in cement ,coal,transportation,metallurgy,mine,medicine and othe areas.2.Can be used for positive and opposite direction.3.Smooth operation, low noise.4.Small volume,light weight and high carrying capacity.5.Easy dismantling and install . gear shaft