mobile crushing plant pictures manveesingh. 87144. 34231. 87110. 34231. 87144. 32220. 87110. Complete OFO Version 2017 OFO Code Description 20171 MANAGERS Managers plan, direct, coordinate and evaluate the overall activities of enterprises, governments and other organizations, or of organizational units within them, and formulate and review their policies, laws, rules and regulations.