1975  
01  

EHWA DIAMOND IND. CO., LTD. established in Youngdungpo, Seoul.
Began manufacture and sales of diamond tools for stone.

1976  
04  

Launched manufacture of diamond core bits and reaming shells for drilling.

1977  
03  

Launched manufacture of diamond grinding wheels.
1985  
04  
Moved plant location to Osan.
1988  
07  
Established stone laboratory.
1992  
04  
Company products were designated as "world class" products by ministry of commerce and industry.
1993  
01  
Established manufacturing plants in Seochun, Korea and in Fujian, China.
1993  
02  
Designated a self calibration institute by the industrial advancement administration.
1993  
11  
Acquired ISO 9001 certification .
1994  
05  
Awarded IR 52 CHANG,YOUNG SIL prize for innovative product development
(Diamond wire saw).
1994  
12  
Awarded the golden prize in the precision technology competition held by
ministry of trade, industry & energy.
1995  
11  
Received the USD $ 50 million export tower award and the meritorious
e xporter tower award at the trade day celebration (Presidential citation).
1995  
12  
Received exemplary small business award given by
the ministry of trade, industry & energy (For small to mid-sized companies).
1996  
07  
Designated as best quality management enterprise in Kyungi-do province.
1997  
01  
Designated as best labor - management cooperation enterprise.
1998  
02  
Selected as one of the best 50 small-to-medium-sized enterprises with competitiveness in product quality (National institute of technology and quality).
1998  
11  
Awarded the golden prize for product quality at the 1st
WBA competition (Korea management consultants association).
1999  
07  
Awarded the diamond prize for production process at the 2nd
'WBA competition (Korea management consultants association).
1999  
11  
Certified as an excellent factory in manufacturing industries.
(Korea management consultants association /
Graduate school of management).
2000  
05  
Awarded the first prize in the 24th productivity competition
(Presidential citation), (Korea productivity center).
2001  
10..
Built up ERP system.
 11..
Honored world best products & Leading company for machine components & materials by Ministry of commerce, industry and energy.

2002..
12..

Acquired revised ISO 9001 and ISO 14001.
2003  
02..
Designated as an excellent R&D center in Korea.
2003  
07..
oSa (Organization for the Safety of Abrasives) certified.
2004  
09..
Established plant in Shanghai, China.
2005  
03..
Awarded prize in the 39th competition for date of taxpayer by minister Ministry of Finance & Economy.

Awarded prize of Korean president in the 32th competition for the date of people for commerce and industry.