| Feb., 1972 | Established Miyachi Electronics Co., Ltd. with the capital of ¥1.5 millions at Arakawa-ku, Tokyo |
| Feb., 1973 | Developed and sold the world's first digital weld measuring instrument(MM-202, 301) |
| June, 1974 | Developed and sold the integrated(MS model) capacitor discharge (MC model)and 3-phase rectifying(MP model) welding power suppply |
| Dec., 1974 | Capital was increased to ¥6 millions |
| Feb., 1979 | Capital was increased to ¥12 millions |
| Feb., 1980 | Opened Chubu Sales Office at Yokkaichi City, Mie Pref. |
| May, 1980 | Developed and sold the world's first constant-current timer |
| Sept., 1981 | Capital was increased to ¥36 millions |
| Oct., 1981 | Established state-of-the-art factory at Noda City, Chiba Pref. |
| Jan., 1982 | Developed and sold all -digital-setting compact welding power supply (ME-10F) |
| Dec., 1982 | Head office functions were moved to Noda City |
| Apr., 1984 | Developed and sold YAG laser equipment |
| Oct., 1984 | Capital was increased to ¥72 millions |
| Apr., 1985 | Expanded the head office/factory; capital was increased to ¥108 millions |
| Apr., 1986 | Developed and sold inverter type welding power supply(IP model) |
| June, 1986 | Established Sales Headquarters in Tokyo |
| Jan., 1987 | Established local subsidiary Miyachi America in Ohio,U.S.A |
| Oct., 1987 | Established Miyachi Laser System Co., Ltd. to reinforce the laser division |
| Oct., 1988 | Opened Osaka Sales Offece |
| May, 1989 | Developed and sold the world's first Compact YAG Laser welding equipment (ML-2220A) |
| Oct., 1989 | Moved Chubu Sales Office to Nagoya City, and opened Nagoya Sales Office |
| Apr., 1990 | Merged with Miyachi Laser System CO., Ltd., and changed the trade name to“Miyachi Technos Corp.” |
| Sept., 1990 | Capital was increased to ¥532.4 millions |
| Sept., 1990 | Established local subsidiary Miyachi Technos Europe GmbH at Bietigheim, Gemany |
| Feb., 1991 | Capital was increased to ¥912.4 millions |
| Apr., 1991 | Established local subsidiary Miyachi Korea in Seoul, Korea |
| Jan., 1992 | Developed and sold YAG Laser Marker |
| Sept., 1993 | Capital was increased to ¥1,081.15 millions |
| Oct., 1994 | Merged Miyachi America with Unitek Equipment, U.S.A., and established Unitek Miyachi Corporation |
| July., 1995 | Established Unitek Miyachi Europe B.V. and acquired Weld-Equip group through Unitek MiyachiCorporation |
| Sept., 1995 | Expanded the head office factory to reinforce the development and laser production division |
| Oct., 1995 | Redeemed the stocks owned by the Company at the time of merger, and the capital was changed to ¥853.19 millions |
| May, 1996 | Established Shanghai Office |
| July, 1996 | Received ISO 9001 certification |
| June, 1997 | Initial public offering at the Securities Dealers Associations Japan Capital was increased to ¥1,179.1 millions |
| Jan., 1998 | Acquired Directed Light Inc., U.S.A. through Unitek Miyachi Corp. |
| May, 1998 | Established Miyachi Trading(Shanghai)Co., Ltd. |
| Mar., 1999 | Expanded the head office factory to reinforce production divisions |
| Jan., 2000 | Established Miyachi Precision Systems Corp. |
| June., 2000 | Acquired resistance welding Div. of Messer Cutting & Welding A.G through Unitek Miyachi Corp |
| July., 2000 | Established Unitek Miyachi International, LTD. for a holding company of Unitek Miyachi Corporation, Directed Light, INC., Peco Welding Systems GmbH and Unitek Miyachi Europe B.V. |
| Sept., 2000 | Received ISO 14001 certification |
| May,2001 | Established Miyachi Technos(Shanghai)Co.,Ltd |
| July,2001 | Acquired Benchmark International,Inc. through Unitek Miyachi international,Ltd. |
| Sep.,2001 | Listed on the Second Section of the Tokyo Stock Exchange,having previously been listed on the JASDAQ |
| Aug., 2003 | Merged Unitek Miyachi International LTD. withUnitek Miyachi Corporation, Directed Light INC. and Unitek Benchmark INC. Andchanged company name to Unitek Miyachi Corporation. |
| Apr.,2004 | Listed on the First Section of the Tokyo Stock Exchange |
| June.,2004 | Capital was increased to ¥1,499.09 millions |