Tender For supply of piston ring for lp stage; moc: teflon; for tanabe pneumatic machinery co. ltd japan make air compr , piston ring for hp stage; moc: teflon; for tanabe pneumatic machinery co. ltd japan make air compres , rider ring for lp stage; moc: teflon; for tanabe pneumatic machinery co. ltd japan make air compres , rider ring for hp stage; moc: teflon; for tanabe pneumatic machinery co. ltd japan make air compres