... near start motor,engine,battery,rotary motor,speed reducer,swivel connection,valve,tube accessiblely,can reduce time of mainterance ... operate,whichis flexible,portable,efficient and fast.5,Scuttle with pneumatic spring can provide upward eyeshot and extral ... ergonomics.9,Ascendant performance of complete appliance,with extraordinary operation efficiency.10,With which many kinds of optional components ...