** Jefferies reiterates its "hold" rating for Australia's Nickel Industries NIC.AX, maintains price target at A$0.70
** Stock is up 2.9% at A$0.72
** Brokerage says stock's current valuations are "full" despite the nickel producer's diversified production growth and ability to maintain EBITDA margins in a cyclically low nickel market
** Approval from Rencana Kerja dan Anggaran Biaya (RKAB), Indonesia's annual mining permit, is critical as co's Hengjaya Mine sales might cease by late-September or early-October if co approaches the 9 mt sales cap, brokerage says
** YTD, stock down 12.7%
(Reporting by Anjali Singh in Bengaluru)
((anjali.singh2@thomsonreuters.com;))