| May 1956 |
Established limited company in order
to operate heat treatment of high-quality special steel products,
including cutting tools, plastic processing tools, molding tools
and other products using salt baths in Tsukagoshi, Kawasaki City |
| Jun. 1958 |
Changed organization type to stock company and
relocated factory to current location |
| Mar. 1967 |
Commended by governor of Tokyo as role model factory
in conducting streamlined management |
| Jun. 1969 |
Started FW friction welding operations |
| Nov. 1969 |
Commended by Director-General of the Small and
Medium Enterprise Agency as role model factory conducting streamlined
management |
| Apr. 1971 |
Started vacuum heat treatment operations in addition
to existing salt bath operations by introducing vacuum heat treatment
furnaces |
| Aug. 1972 |
Became a factory approved to display JIS marks
issued only for products that conform to JISB 6913 as specified
in Article 25 of the Industrial Standardization Act |
| Apr. 1986 |
Switched salt-bath nitrocarburizing treatment to
gas nitrocarburizing by introducing gas nitrocarburizing furnace
(DRINITE) |
| Oct. 1987 |
Founder Motoyuki Kamijima commended by governor
of Tokyo as contributor to Tokyo achieving results that contribute
to promotion of small and medium enterprises |
| Aug. 1988 |
Started TiN coating (Ti-COAT N) by introducing
ion plating equipment |
| May 1996 |
Started TiCN coating (Ti-COAT CN) by introducing
second ion plating equipment |
| Jul. 1996 |
Started WPC treatment operations after obtaining
WPC treatment license |
| Nov. 1996 |
Factory Manager Seio Asuke commended by the Minister
of Labor asContemporary Master Craftsman |
| Jul. 1998 |
Became Japan's first company specialized in heat
treatment to obtain ISO 9001 certification |
| Dec. 1999 |
Became Japan's first company specialized in heat
treatment to obtain ISO 14001 certification |
| Jun. 2009 |
JIS Q 9100(AS-QMS) certificated |
| Nov. 2010 |
Deputy Factory Manager Mitsuyuki Kubotera
commended by Minister ofLabor as Contemporary Master Craftsman |
|
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