|
1983. 7
|
YEONJISA Co. was established in Gyeyang-gu,
Inchon |
|
1984. 2
|
Inroduced Mold finishing stones and Honing
stones |
|
1986.10
|
YEONJISA Co. moved to Worl-got, Gimpo-city |
|
1987. 7
|
Developed Carbon-grit stones |
|
1989. 4
|
Developed water-proofing PVA abrasive stones
(FBB) for a roll application |
|
1990. 5
|
Introduced Internal grinding wheel for a
bearing application |
|
1990.11
|
Gahyun-ri Factory was opened in Gahyun-ri,
Tongjin-myun, Gimpo-city |
|
1992. 4
|
Introduced Super finishing stone (the first
in Korea) for a bearing application |
|
1993. 2
|
Developed the Diamond/Borazon-grit stones
and wheels |
|
1995. 3
|
Introduced new ceramic-grit stones (CT wheel)
|
|
1997. 1
|
Opened Sales Office in Seoul Industrial
Tools Center, Guro-dong, Seoul |
|
1999. 7
|
The 2nd Gahyun-ri factory was opened |
|
2001.10
|
Shanghai branch was established in Shanghai,
China |
|
2001.11
|
The 3rd Gahyun-ri factory was opened |
|
2001.12
|
Foundation of the research institute
|
|
2001.12
|
Introduced Super stone for mold |
