WRAPUP 2-Australia presses China on detained Rio exec

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* Australia trade minister expresses concerns to China

* Australia says has no information on investigation

* China-Australia trade ties unlikely affected - minister

* Detained Australian appears well during consular visit

By Ben Blanchard

SHANGHAI, July 11 (Reuters) - Australia's trade minister pressed China on Saturday for more details about the detention of a Rio Tinto (RIO.AX) (RIO.L) executive, but said he did not expect the case to affect bilateral trade ties.

Stern Hu, an Australian national, and three Chinese employees of Rio Tinto's iron ore department were detained last week, on what China said was suspicion of stealing state secrets.

Simon Crean told reporters he had expressed "strong concern" to the Shanghai city government regarding Hu, and that Australia hoped the issue would be dealt with quickly.