1.ISO9001,TS16949 2.Good quality and poweful R ... are a professional hydraulic cylinder manufacturer. They are used for construction, mining, forestry, marine, demolition, military, material ... and trailer, loader, utility and waste management.2.You can be assured that our products have ... factory,we can design the product based on your drawing. seal hydraulic cylinder parts for marine(TS16949/ISO9001) ...