●Designed and manufactured by patented technology, compact structure and strong air tightness.
●The end face of the vane is applied with the imported slab rubber so that it is zero clearance with the enclosure and flly antisticking and antiblocking.
●The end face of H-type blade is made of wear-resistant steel plate to prevent the blade from wearing.
●The bearing is outlayed to resist dusts.
● It is convenient to be manitained.
● It is able to adjust or change the abrasion of the vane.It has long service life.