Earlier on Wednesday, Gold Apollo’s head Hsu Ching-kuang said the pagers were “100 per cent not” made in Taiwan.
Hsu visited Gold Apollo’s offices in New Taipei City with investigators on Thursday.
“The case is under investigation, I can’t comment,” he told reporters as he left.
The day before, Gold Apollo had pointed the finger at its Budapest-based partner BAC Consulting KFT, saying in a statement that the Hungarian company had been allowed to use its trademark.
It added that the model mentioned in media reports “is produced and sold by BAC”.
But a Hungarian government spokesman said BAC Consulting KFT was “a trading intermediary, with no manufacturing or operational site in Hungary”.
The mystery has also spanned to Bulgaria, where authorities are looking into the possible involvement of a Sofia-based company in delivering pagers.