1.Adopt high-intensitive alloy steel 2.Baking finished surface 3.Colour:red,blue,grey 4,OEM offered,Dilibery in time. Gerneral Type Hydraulic Jack:1,Adopt high-intensitive alloy steel,durable service2,Adopt full size of spring,can speed the reacton of the spring and prolong the service life of the spring.3,Supply all kinds of accessories to match with the cylinder piston rod and oil cylinder base ...