Товч тодорхойлолт: Product Name OEM powder metallurgy gear Material Iron powder/Steel/Stainless Steel/Cooper/Nickel Technology Powder Metallurgy - Machining Certificate ISO9001/TS16949 Surface Treatment High Frequency quenching, Oil impregnation Unspecified Tolerance ISO 2768 - m / H14, h14, +- IT14/2 Apperance No Crumbling, Cracks, …