This twin-shaft concrete mixer’s side doors are controlled by hydraulic cylinders. When you need to change the lining plates or check the inside, just press a button and the two side doors will open. One operator can change the lining plates in one day. Rotary action of the multi-unit arm design mixes materials evenly in the shortest time. Handex Vertipower International Ltd. handex.en.made-in-china.com. WOC booth #N543