| 1989 | 
              
              
                
                  
                    | ・ | 
                    April 10th, Plum Five Co., Ltd. is established. | 
                   
                  
                    | ・ | 
                    Paid-in Capital \5 million. | 
                   
                  
                    | ・ | 
                    PFC launches business with Electroglas. | 
                   
                  
                    | ・ | 
                    PFC starts microwave device inspection. | 
                   
                
               
               | 
            
            
              | 1990 | 
              
              
                
                  
                    | ・ | 
                    Capital increase to \10 million. | 
                   
                  
                    | ・ | 
                    PFC commences computer system maintenance business (for JR). | 
                   
                
               
               | 
            
            
              | 1991 | 
              
              
                
                  
                    | ・ | 
                    PFC opens the Fujigaoka office in Yokohama. | 
                   
                  
                    | ・ | 
                    PFC starts manufacturing Prober associated parts and design. | 
                   
                
               
               | 
            
            
              | 1992 | 
              
              
                
                  
                    | ・ | 
                    Nagoya Office opens. | 
                   
                  
                    | ・ | 
                    Starts business with "Japan Railway system". | 
                   
                
               
               | 
            
            
              | 1993 | 
              
              
                
                  
                    | ・ | 
                    PFC commences maintenance for Meteorological satellite system "HIMAWARI". | 
                   
                
               
               | 
            
            
              | 1994 | 
              
              
                
                  
                    | ・ | 
                    Starts investigation for development and marketing of own brand product. | 
                   
                
               
               | 
            
            
              | 1995 | 
              
              
                
                  
                    | ・ | 
                    Head office moves to new company buildings (6-25 Tsutsujigaoka, Aoba-ku, Yokohama). | 
                   
                  
                    | ・ | 
                    First delivery of semiconductor probing system. | 
                   
                
               
               | 
            
            
              | 1996 | 
              
              
                
                  
                    | ・ | 
                    PFC commences sales of semiconductor probing system. | 
                   
                
               
               | 
            
            
              | 1997 | 
              
              
                
                  
                    | ・ | 
                    Direct marketing and sales of Electroglas 2000 series prober. | 
                   
                
               
               | 
            
            
              | 1998 | 
              
              
                
                  
                    | ・ | 
                    Starts DR Prober sales. | 
                   
                  
                    | ・ | 
                    Develops of single chip Prober. | 
                   
                
               
               | 
            
            
              | 1999 | 
              
              
                
                  
                    | ・ | 
                    Starts developing PCP Series Prober development. | 
                   
                
               
               | 
            
            
              | 2000 | 
              
              
                
                  
                    | ・ | 
                    Starts selling own system for Meteorological satellite "HIMAWARI". | 
                   
                  
                    | ・ | 
                    Semiconductor Technology Center opens at Eda, Yokohama. | 
                   
                  
                    | ・ | 
                    Announces PCP-100 series prober at "Semicon Japan". | 
                   
                
               
               | 
            
            
              | 2001 | 
              
              
                
                  
                    | ・ | 
                    Opens the maintenance center in Aobadai head office. | 
                   
                  
                    | ・ | 
                    Capital increase to \20 million. | 
                   
                
               
               | 
            
            
              | 2002 | 
              
              
                
                  
                    | ・ | 
                    PFC introduces the division system for better management. | 
                   
                
               
               | 
            
            
              | 2003 | 
              
              
                
                  
                    | ・ | 
                    Recovery from semiconductor industry recession. | 
                   
                  
                    | ・ | 
                    Starts business with Japan Freight Railway. | 
                   
                
               
               | 
            
            
              | 2004 | 
              
              
                
                  
                    | ・ | 
                    Starts developing of WeSatViewer Ver.2 for satellite HIMAWARI #6. | 
                   
                
               
               | 
            
            
              | 2005 | 
              
              
                
                  
                    | ・ | 
                    Develops (PCP-303SL) 300mm Probing Handler. | 
                   
                  
                    | ・ | 
                    Develops (PCP-105LM) Laser marking system. | 
                   
                
               
               | 
            
            
              | 2006 | 
              
              
                
                  
                    | ・ | 
                    PCP series cumulative sales reached 100 units. | 
                   
                  
                    | ・ | 
                    Develops (PCP-102WS) Double-Sided Prober. | 
                   
                
               
               | 
            
            
              | 2007 | 
              
              
                
                  
                    | ・ | 
                    PCP series cumulative sales reached 150 units. | 
                   
                  
                    | ・ | 
                    Develops J-Alert disaster information system. | 
                   
                
               
               | 
            
            
              | 2008 | 
              
              
                
                  
                    | ・ | 
                    PCP series cumulative sales reached 200 units. | 
                   
                
               
               | 
            
            
              | 2009 | 
              
              
                
                  
                    | ・ | 
                    System Technology Center opens at Ichigao, Yokohama. | 
                   
                
               
               | 
            
            
              | 2010 | 
              
              
                
                  
                    | ・ | 
                    Develops (PCP-303N) New 300mm Probing Handler. | 
                   
                  
                    | ・ | 
                    Municipalities start introducing J-Alert in full swing. | 
                   
                
               
               | 
            
            
              | 2011 | 
              
              
                
                  
                    | ・ | 
                    PFC moves the head office from Aobadai to Eda-cho (Semiconductor Technology
                    Center). | 
                   
                  
                    | ・ | 
                    PCP series cumulative sales reached 300 units. | 
                   
                
               
               | 
            
            
              | 2012 | 
              
              
                
                  
                    | ・ | 
                    PFC receives a supplier excellence award in “Local Site Support” category
                    from ADI-Philippines. | 
                   
                
               
               | 
            
            
              | 2013 | 
              
              
                
                  
                    | ・ | 
                    PCP series cumulative sales reached 350 units. | 
                   
                
               
               | 
            
            
              | 2014 | 
              
              
                
                  
                    | ・ | 
                    Relocation of probing handlers from Japan to Taiwan. Support service by
                    local agent KIC starts. | 
                   
                
               
               | 
            
            
              | 2015 | 
              
              
                
                  
                    | ・ | 
                    Starts selling manual probers of EVERBEING. | 
                   
                
               
               | 
            
            
              | 2016 | 
              
              
                
                  
                    | ・ | 
                    Released New 300mm Wafer Prober (PCP-302N).  | 
                   
                  
                    | ・ | 
                    PCP series cumulative sales exceeded 400 units.  | 
                   
                
               
               | 
            
            
              | 2018 | 
              
              
                
                  
                    | ・ | 
                    30 years since PFC was established. | 
                   
                
               
               | 
            
            
              | 2019 | 
              
              
                
                  
                    | ・ | 
                    Develops Tri-temp wafer prober (PCP-302NT). | 
                   
                
               
               |