- NIPPON TELEPHONE INC.
- Address:2F, 3-2-4, Nishishinjuku
- Fujicell Techno Corporation
- Address:1-10-1 Masugata Tama-ku, Kawasaki, Kanagawa Pref., Japan
- TMI Inc.
- Address:5-33-3 Midori Shimotsuke-shi Tochigi-ken 329-0433 Japan
- API Corporation
- Address:Japan
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