15 February 2012 Last updated at 05:42 ET
Iran is to unveil a "new generation" of faster, more efficient uranium enrichment centrifuges, state television says.
President Mahmoud Ahmadinejad is due to make an announcement on Iran's nuclear programme later.
Western countries fear that Iran is working towards making its own nuclear weapons.
Tehran denies this, saying its nuclear programme is only for energy production.
Article Source : BBC News
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