Ring Die：ultra-wear stainless steel,vacuum quenching,uniform hardness,high strength,long lifetime.
Roller：surface stacking super wear resistant alloy process,lifetime equal to ring die.
Roller bearings：high-temperature resistant bearings,enhanced compact arrangement roller raceway optimization structure,high loading capacity,long lifetime.
Main shaft：integrated throughout the reducer,multi-section repeated positioning structure,high stiffness,smooth operation. http://www.sdyulongjixie.com/
