++++ 1.Free movement of persons - Freedom of establishment - Freedom to provide services - Conditions governing access to activities as a self-employed person in manufacturing and processing industries - Recognition of the effective exercise of an activity in another Member State - Conditions under which such exercise may be regarded as effective - Certificate issued by the Member State from which an individual has come - Probative value with regard to the authorities of the host Member State - Limits ( Council Directive 64/427, Arts 3 and 4(2 ) ) 2 . Free movement of persons - Freedom of establishment - Freedom to provide services - Conditions governing access to activities as a self-employed person in manufacturing and processing industries - Previous professional training - Concept ( Council Directive 64/427, Art . 3(b ) )