... .Technical Specifications Wire Diameter 0.08mm-13mmMaterialStainless steel, carbon steel, spring steel, alloy spring steel, refractory steel, brass, bronze, etc.Surface Treatment ( ... . When the goods are ready, we also have 15% spot check. Distinguished customer inspection are also warmly ... are a hardware factory,rathan than trading company,what's more, we have specilized in hardware and fasteners ...