Silly question time ?

Are the manufactures of Ultra light aircraft typed as "certified" manufactures or are they listed under another coding. Here in South Africa we to have the 51% rule but it applies to who has the authority to do maintenance on the aircraft. To this degree, if its a "professionally" assembled plane then "they" get the maintenance rights and "they" has to be inspected and "typed" as a professional assembler by our CAA under one of those "other" codings, just like the ultra light manufactures.

Pieter Pienaar