![Mikio Doi](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Mikio Doi worked as a Director & Manager-Customer Services at NTT Communications Corp., Director at MIRAIT One Corp., and Senior MD & Senior Managing Executive Officer at TTK Co., Ltd. from 2009 to 2010.
| Companies | Position | End |
|---|---|---|
NTT Communications Corp.
 NTT Communications Corp. Wireless TelecommunicationsCommunications Provides domestic and international telecommunications services | Director/Board Member | - |
| MIRAIT ONE CORPORATION | Director/Board Member | - |
| TTK CO., LTD. | President | - |
Active
Inactive
Listed companies
Private companies
| Private companies | 3 |
|---|---|
TTK Co., Ltd.
 TTK Co., Ltd. Engineering & ConstructionIndustrial Services Engages in design, construction, maintenance, consulting, and system integration of communication, electrical & information related equipment | Industrial Services |
NTT Communications Corp.
NTT Communications Corp. Wireless TelecommunicationsCommunications Provides domestic and international telecommunications services | Communications |
MIRAIT One Corp.
 MIRAIT One Corp. Engineering & ConstructionIndustrial Services Operates as a holding company with interests in electrical and telecommunications engineering works | Industrial Services |
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