For inquiries or information

TEL: +81-80-1928-8778

Business hours

9:00 ~ 17:00 (Monday ~ Friday)

Surfing OFFICE KTK Homepage (2 min.) 

In Kampala, Uganda in September, 2008
In Kampala, Uganda in September, 2008 as a member of Investment Promotion & Observation Team both by Japanese Government and Private sectors

Office KTK was established in Onomichi-city, Hiroshima in Japan in 1977 as a translator's and interpreter's office for SMEs. Since then we have served for many companies, groups and individuals with its business policies of contribution to internatinalization, natural environment and local communities.


KEC Inc., the predecessor of Office KTK, has been an electronic and chemical technology development company and it worked on developing the electricity saving technologies and the devices (named SOD) between 1994 and 2012. It won Energy Conservation Award in 1997 as the smallest company ever and the technology has been transferred to NTT-AT. (3D rotatable images of SODs)

The SOD also has received two other prominent awards, making us a triple awards winner


This SOD technology has now been applied to Internet SOD as IoT (Internet of Things) as well.(Introductory video at the exhibition


Office KTK is now newly operating "i V-Chat Japanese", "Online English learning support" as the language related business, and the guest house, Tour Guide for non-Japanese and the office / shop for rent (only in Japanese) as the real estate business.                                                                              

This website also has a blog pagehobby pagesregional volunteer activity pages as well as TV and radio program production recorded pages.


                           Thank you. 


Notice: The homepage site of KEC Inc. ( and its E mail address were closed on December 31, 2013.

Introduction of KTK & Technologies by medias

Introduction by TVs 

Coverage by newspapers and magazines (~2012)

Coverage by newspapers and magazines (2013~)

Introduction by videos 

KTK Homepage 

Career history (Karl Kamamoto)

Hobby introduction (Karl Kamamoto) 

Volunteer & Hobby (Karl Kamamoto)

SOD technology now has been being upgraded into IoT technplogy.

                                                                   For further information, please visit here.

The following pictures show the overseas and its related activities

More pictures are here.

Music Space 2010an original guitar music for us,

               compsed by A. Kitagawa, a guitarist

La Playa    Barcarole    Feste Lariane

Recuerdos de la Alhambra  

               played by the site owner, Karl Kamamoto

L' estro Armonico / SORA,

     a classic guitar group, Karl Kamammoto  

Please listen to those while surfing our home pages.

News updates

July 06, 2009 Newly designed Homepage for Free English Learning Society, Onomichi
June 28, 2019 Newly designed Homepage for Power Saving Business (SOD)
June 22, 2019 Newly designed Homepage for Eiken (STEP) 1st Graders’ Network, Japan
May 14, 2019 Recuerdos de la Alhambra played and posted on YouTube
April 20, 2019 Promotion video of Sunflower Music Festival posted on YouTube
April 11, 2019 54 year-long career history tabulated
March 11, 2019 Thanks in full occupancy, KEC Building 
Feb. 01, 2019 Free Gift Campaign of Energy Conservation Prize awarded SOD started
Jan. 31, 2019 STEP 1st Graders' Network in Japan opened  with Youtube site
Jan. 19, 2019 Free English learning course in the evening opened
Dec.01, 2018 The 3rd learning place in the evening for  Free English learning society learning planned 
Sept. 01, 2018 Free downloading of my writings (only in Japanese) started
June 25, 2018 Production of CD or DVD for home use players started
June 05, 2018 A new illustration of myself created
June 01, 2018 Guest House KTK Onomichi closed
May 01, 2018 Meeting place for Onomichi ESS changed
April 01, 2018 Tenants for the rooms for rent advertised
January 27, 2018 Tour Guide for non-Japanese in Japan started
January 09, 2018 Home delivery of music, home delivery of English started
August 29, 2017 Video brochure for Guest House KTK Onomichi on the web
August 06, 2017 Second business talks on education program export to Indiain Kyoto
May 18, 2017  Free English learning lessons offered
April 23, 2017

Sixth Sunflower Music Festival 2017 finished,  

Music played by Karl Kamamoto are here .

March 23, 2017 Business matching between India and Japan started
March 03, 2017 Translation work for Malaysian patrol vessel finished
February 16, 2017 New Project of Parent-Child English Learning favorably reported
January 01, 2017 Happy New Year!

 News in the past is listed here.

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