... .free sample 4.Rohs or SGS aluminum/ steel flat and round head solid rivet factoryA: SpecificationSize: <20mmmaterial: brass,aluminum ... Jinri's major product line includes chipboard screw, wood screw,drywall screw, machine screw, TEK screw, and deck screw etc. ... , which include mounting press, grinding & polishing, micro hardness testing, torsional test, and salt spray test. Looking for quality rivet ...