... 4.OEM service Item NO. jig and fixture design for sand casting productsMaterialsIron, aluminum, steel, copper, plastic, carbon steel, ... projectTo provide production design, production and technical service, mould development and processing, etc.Testing machineDigital Height Gauge, ... of machining parts:1, Material :Brass , bronze , copper , aluminium , alloy , stainless steel and so on;2, Usage: auto ...