| 1987 (Apr 18-21) | Official Mission, chaired by Mr. Tomoo Miyazaki. |
| 1988 (Sep 29 – Oct 1) | First mission of The Japan Chamber C.I., chaired by Mr. Bunichiro Tanabe. |
| 1990 (Sep. 29 – 30) | Second mission of The Japan Chamber C.I., chaired by Mr. Shinroku Morohashi. |
| 1993 (Apr. 15 – 16) | Third mission of The Japan Chamber C.I., chaired by Mr. Shinroku Morohashi. |
| 1995 (Nov. 30 – Dec. 3) | Fourth mission of The Japan Chamber C.I., chaired by Mr. Shinroku Morohashi. |
| 2000 (Sep. 10 – 12) | Fifth mission of The Japan Chamber C.I., chaired by Mr. Shinroku Morohashi. |
| 2003 (Nov. 4 – 5) | Sixth mission of The Japan Chamber C.I., chaired by Mr. Mikio Sasaki. |