 The two American companies, named NTK Precision Axle Corporation and Asahi Forge of America Corporation provided heat treatment and forging services, respectively.The company in China was called Beijing NTN-Seohan Driveshaft, and served as an additional manufacturing facility for their constant-velocity joint platform.In the year 2004, NTN Mie Corporation and Shangzhou NTN-Guangyang Corporation were formed for bearing fabrication while Nagano Works, Kuwana Works, Iwata Works, and Okayama Works earned ISO/TS16949 and ISO9001 certifications.