Group companies
| OS CO.,LTD. | Headquarters: OS Osaka Building, 6-5-53 Minamitsumori, Nishinari-ku, Osaka-shi, Osaka 557-0063 Google Map Head Office: 3-25-18 OS Tokyo Building, Ayase, Adachi-ku, Tokyo 120-0005 Google Map |
| OSM CO.,LTD. | Headquarters: 278-3 Kakehashi, Yamasaki-cho, Shiso, Hyogo 671-2513 Google Map |
| OS+e CO.,LTD. | Headquarters: OS Osaka Building, 6-5-53 Minamitsumori, Nishinari-ku, Osaka-shi, Osaka 557-0063 Google Map |
| OSB(Hokkaido) CO.,LTD. | Headquarters: 2-2-5 kikusui 8 jo, shiraishi-ku, Sapporo-shi, Hokkaido 003-0808 Google Map |
| OSB(Okinawa) CO.,LTD. | Headquarters/Okinawa Factory: 1-12-3 Chatan, Chatan-cho, Nakagami-gun, Okinawa 904-0116 Google Map Hyogo Offiece: 278-3 Kakehashi, Yamasaki-cho, Shiso, Hyogo 671-2513 Google Map |
| OSI CO., LTD. | Head office： 20th Floor, Wah Hing Commercial Building, 283 Lockhart Road, Wanchai, Hong Kong Google Map |
| OSC CO.,LTD. | Room 2305, Block B, 8 Guangqumenwai Street, Chaoyang District, Beijing Google Map |