Par.(Tons/Yr) unit: tons DXNs(g-TEQ/Yr) unit: tons SOx(Tons/Yr) unit: tons NOx(Tons/Yr) unit: tons 4.8 10.2 4.7 10.9 5.7 2009 2010 2011 2012 2013 2009 2010 2011 2012 20132009 2010 2011 2012 2013 10,369 11,743 11,165 9,932 8,883 9,836 10,185 9,573 8,948 7,982 64 2013 Corporate Sustainability Report c. Reduction of abnormal emissions: In addition to periodical meetings to review violation notices and defects identified during internal audits and sharing experiences regarding related improvements, CSC also actively promotes hardware equipment improvement, self-management and environmental observation efforts.