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Chunlong socket is made from chromium-molybdenum steel or chromium-vanadium steel by processes of baking, extrusion, air-hardening and vacuum tempering.
Chunlong socket is made from chromium-molybdenum steel or chromium-vanadium steel by processes of baking, extrusion, air-hardening and vacuum tempering.
Chunlong socket is made from chromium-molybdenum steel or chromium-vanadium steel by processes of baking, extrusion, air-hardening and vacuum tempering.
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