The contractor must Exchange Visitor cards and card every time you reach County plant and need to write the work permits (Work Permit) and bring to the floor next to others.
Contractors must redeem and Visitor card every time they write a Mills and must seek permission to work (Work Permit) and applied to the area of operation.
The contractor must exchange card on the card and Visitor every district of the factory and have to write a permit application to work (Work Permit) and mounted at the area of operation.