"New centrifuges continue to be installed at the uranium enrichment plant in Natanz. IAEA inspectors come to Iran every month and they can see the substantial changes that have taken place at the facility," said Agazade, who is also head of the country's atomic energy organization.
He said Tehran's progress in implementing its nuclear program is reflected in a new report due to be presented by the International Atomic Energy Agency.
Agazade said earlier the centrifuges were locally made.
Media reports have circulated that Urenco, a U.K.-based European enrichment technology and uranium fuel producer, had supplied centrifuges to Iran via Pakistan.
A Russian first deputy prime minister said earlier Friday Russia will not export uranium enrichment centrifuges to Iran, adding it will never transfer its uranium enrichment technology to anyone.
"Russia has long abided by its non-proliferation commitments. These [centrifuges] are subject to export control. This technology will never be transferred to anyone," Sergei Ivanov said.
He said Russia had produced eight generations of gas centrifuges up to now and was working on a new generation.
Russia is currently building five nuclear reactors for nuclear power plants in China, India and Iran. In October 2006, it won a tender to build a plant in Belene, Bulgaria.
