boom industry focus on small bearings, 600 sereis,6000 series,6800 series, 6900 series-.. chrome steel material(a little dear), carbon steel material (very cheap) and iron material(much cheaper).
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boom industry focus on small bearings, 600 sereis,6000 series,6800 series, 6900 series-.. chrome steel material(a little dear), carbon steel material (very cheap) and iron material(much cheaper).
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boom industry focus on small bearings, 600 sereis,6000 series,6800 series, 6900 series-.. chrome steel material(a little dear), carbon steel material (very cheap) and iron material(much cheaper).
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