ISO45001 certification (the old version for OHSAS18000) is the occupational health and safety management system, the certification system is by the British Standards Institute (BSI), Norway Veritorik (DNV) and other 13 organizations jointly launched in 1999 international standards, it is the organization (enterprise) to establish the foundation of occupational health and safety management system, It is also the main basis for enterprises to conduct internal audit and certification bodies to implement certification audit. It is another international standard certification system after the implementation of ISO9001, ISO14001 international standards.