Max to do preprint designed for trade (6,3,6)

I believe the answer is:

import and export

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'trade' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'max to do preprint designed' is the wordplay.
'designed' indicates an anagram (designed with the letters).
'max'+'to'+'do'+'preprint'='maxtodopreprint'
'maxtodopreprint' is an anagram of 'IMPORT AND EXPORT'.

'for' acts as a link.

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I've seen this clue in the Sydney Morning Herald.

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