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            | Grobal |  | Yamaichi Electronics Group |  
            | 
 | May 1997
 | Started 3R-Activities (Reduce, Reuse, Recycle) |  
            | Montreal Protocol adopted | September 1997
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            | Kyoto Protocol adopted | December 1997
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            | 
 | April 1998
 | Started ISO14001-based environmental activities |  
            | 
 | September 1998
 | Stopped the use of plastics containing particular bromine flame retarder |  
            | 
 | November 1998
 | ISO14001 certified (Headquarters, Sakura, and Oita offices) |  
            | 
 | November 2000
 | ISO14001 certified (Matty Co., Ltd. and 5 branches/offices in Japan) |  
            | 
 | May 2001
 | Issued Green Procurement Guideline (YS Regulations 1st Edition) |  
            | ELV effective | July 2003
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 | November 2003
 | Certified by Sony Corporation as Green Partner |  
            | 
 | April 2004
 | ISO14001 certified (Koshin Kogaku Co., Ltd.) |  
            | 
 | June 2004
 | Started activities to eliminate RoHS 6 |  
            | 
 | August 2004
 | Reinforcement of the practice of Green Procurement Guideline (YS Regulations 6th Edition) |  
            | 
 | December 2004
 | ISO14001 certified (Yamaichi Electronics Shenzehn Ltd.) |  
            | Kyoto Protocol effective | February 2005
 | ISO14001 certified (Pricon Microelectronics Inc.) |  
            | RoHS effective | July 2006
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            |  | December 2006
 | ISO14001 certified (Asia Yamaichi Electronics Inc.) 
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            | 
 | December 2008
 | ISO14001 certified (Suwa and Okayama Branch Office) |  
            | 
 | June 2011
 | Rooftop Gardening and Green Curtains at headquarters |  
            | 
 | July 2011
 | Photovoltaic Panels at Sakura Factory |  |