| 1988  | ¿µ±¹ÀÇ Robinson Instruments Ltd. ÀÇ Çѱ¹Áö»ç ⸳ | 
                
                  | 1990 | Robinson Trading ¼³¸³ | 
                
                  | 1990 | ½º¿þµ§ÀÇ Programma Electric AB ÀÇ ±¹³» ´ë¸®Á¡ °è¾à | 
                
                  | 1991  | ¹Ì±¹ÀÇ Phenix Technology »çÀÇ ±¹³» ´ë¸®Á¡ °è¾à | 
                
                  | 1994 | 350kV Cable ¼ö´Ü¸» ÀåÄ¡ ±¹»ê °³¹ß | 
                
                  | 1995 | ¹Ì±¹ÀÇ Hipotronics »çÀÇ ±¹³» ´ë¸®Á¡ °è¾à | 
                
                  | 1995 | ¹« Â÷Æó½Ç ¹æ½Ä 450kV Cable ºÎºÐ¹æÀü System ±¸Ãà | 
                
                  | 1996  | 1200kV GIS ºÎºÐ¹æÀü System ±¸Ãà | 
                
                  | 1997 | 750kV Cable ºÎºÐ¹æÀü System ±¸Ãà | 
                
                  | 1998 | µ¶ÀÏÀÇ Hilo-Test »çÀÇ ±¹³» ´ë¸®Á¡ °è¾à | 
                
                  | 2002  | GE Syprotec»çÀÇ ±¹³» ´ë¸®Á¡ °è¾à | 
                
                  | 2002 | Á÷Á¢°á¼±¹æ½ÄÀÇ 750kV GIS ºÎºÐ¹æÀü System ±¸Ãà | 
                
                  | 2004 | Ãæ°ÝÆÄÇü ºÐ¼®Software IWAS ±¹»ê °³¹ß | 
                
                  | 2004 | µ¶ÀÏÀÇ G. Jost »çÀÇ ±¹³» ´ë¸®Á¡ °è¾à |