** Sprintex SIX.AX soars as much as 53.3% to nearly nine-month high of A$0.069; marks biggest intraday pct gain since September 14, 2021
** Stock last up 15.6% at A$0.052; set for best day since September 4, 2021
** Clean-air tech firm signs private-label supply agreement with Chinese aquaculture equipment supplier Guangdong Baode Technology (BD Compressor)
** Under agreement, BD Compressor to buy co's G15-series energy efficient turbo jet blowers, which uses electromagnetic technology
** Deal worth A$9.3 mln (~$6 mln) over three years
** Stock sees busiest session since June 21, 2024, with ~5.6 mln shares traded - 13.1x the 30-day avg
** YTD, SIX falls 14.8%
($1 = A$1.5223)
(Reporting by Shruti Agarwal in Bengaluru)
((Shruti.Agarwal@thomsonreuters.com))