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Carlyle Group and Gresham Private Equity may bid more than A$400 million ($453 million) for Pilkington Australia, sources said.
Catalyst Investment Managers and a venture between Pacific Equity Partners and DMS Glass also requested sale documents, the sources said.
Nippon Sheet Glass bought Pilkington Plc for £1.8 billion ($4.9 billion) last year, making it the world's largest supplier of glass used in buildings and cars.
Pilkington Australia was a unit of the UK manufacturer.
