All ISO standards are not same. ISO 9001 is for quality, ISO 14001 Is for environment. 2004/2008/2015 etc are standard revision year by ISO. So, BGP CDO is ISO certified for many years, exact i dnt know. Latest certification is 2015 standard and it is first time, earlier coaching depot 9001 standard was 2008 which is updated to 2015 now. Certification has to be renewed periodically otherwise it expires...