| 1951 | 
                Manufacturing and sales of electronics tools started. | 
              
              
                | 1977 | 
                Soldering irons with ceramic heaters were put on the market for the first time in the world. | 
              
              
                | 1979 | 
                High precision cutting pliers and static electricity measure products were put on the market. | 
              
              
                | 1982 | 
                100V type soldering irons H-130 which weights just only 16g were put on the market for the first time in the world. | 
              
              
                | 1988 | 
                The hot wind formula flat IC removal machine HS-600 for SMD was put on the market. | 
              
              
                | 1990 | 
                The optical apparatuses for precision inspection were put on the market. | 
              
              
                | 1994 | 
                Tip part removal machines HS-400 were put on the market. | 
              
              
                | 1998 | 
                The new style small lightweight crimping tools P-732 acquired JIS standard. | 
              
              
                | 2000 | 
                The lead-free solders, easy on the earth's environment, was put on the market. | 
              
              
                | 2003 | 
                The plastic tip tweezers P-825 which weights just only 8g were put on the market. |