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- Feb.1946
- started private processing industory of electrical insulating material,
such as ebonate bakelite, etc at current sumida facility
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- Nov.1950
- referred company name as sumida processing place
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- Nov.1952
- became company orgarizationed and mode sumida processing place limited
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- Jan.1965
- build inspection building associating w/ current sumida facility
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- Oct.1966
- as the company grow,changed to "Sumida mfg.co.,Ltd."
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- Oct.1971
- 25th anniversary and completion of the main facility
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- Mar.1975
- increased capital stock to \10,000,000
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- Mar.1977
- increased capital stock to \20,000,000,introduced vacuum entered aerospace and railroad field molding machine
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- Nov.1982
- introduced first machining center,started NC processing
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- May.1986
- 40th anniversary and completed the second facility
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- Apr.1988
- introduced the first industory robot, started 3DNC trimming process for molded parts
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- Oct.1989
- introduced the first CNC router for trimming of molded parts
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- Jan.1993
- completed reconstuction of the main facility
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- Sept.1993
- increased capital stock to \40,000,000
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- May.1996
- established "Belltech Laser"
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- Dec.1997
- opened material center
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- Mar.1998
- extention of the second facility and opened the third facility
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- May.2007
- closed the second and the third facility completed Katsushika facility renamed the main facility to Sumida facility
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- Oct.2010
- QMS approved
QMS JISQ9001：2008(ISO9001：2008)
QMS for Aviation,Space,and Defence Organizations JISQ9100：2004(AS9100)
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- Oct.2016
- QMS approved
QMS JISQ9001：2015(ISO9001：2015)
QMS for Aviation,Space,and Defence Organizations JISQ9100：2016(AS9100)
