... Invar,steel, stainless steel, aluminum, brass, alloy... Finish: heat treated, oxided, plated, blastedServiceMachining workMaterialsteel, stainless steel, Invar, carbon steel, free cutting steel, ... is offered by ISO certified manufacturer - visionseal co.,ltdQC:Strict quality control for machining work by ... keeping low stock rate. Material we can work on:Stainless Steel - AISI SUS 302, 303, 304, 316, ...