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Jinan,Shandong,China China
Persona de contacto Michael Liu
Dirección Jinan, Shandong
Our product has precise size, high roundness, high hardness and mechanical properties. It is resistant to abra
1.Feature: 1) surface hardness to 57-67 HRC, volume hardness of 56-64 HRC 2) impact toughness high: impact t
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