Your English is excellent Rainer but the subtitles of the language still elude you. There is a very large difference between strategic and commercial partners.
Have a look at the definition of strategic:
—adjective
- pertaining to, characterized by, or of the nature of strategy: strategic movements.
- important in or essential to strategy.
- (of an action, as a military operation or a move in a game) forming an integral part of a stratagem: a strategic move in a game of chess.
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Military.
- intended to render the enemy incapable of making war, as by the destruction of materials, factories, etc.: a strategic bombing mission.
- essential to the conduct of a war: Copper is a strategic material.
Sometimes, stra·te·gi·cal.
Origin: 1815–25; < Greek stratēgikós, equivalent to stratēg(ós) general (see strategy + -ikos -ic
—Related forms
stra·te·gi·cal·ly, adverb
non·stra·te·gic, adjective
non·stra·te·gi·cal, adjective
non·stra·te·gi·cal·ly, adverb
un·stra·te·gic, adjective
un·stra·te·gi·cal, adjective
un·stra·te·gi·cal·ly, adverb