Australia's Pure Hydrogen gains on purchase order despite sector-wide losses
** Shares of Pure Hydrogen PH2.AX rise as much as 2.8% to A$0.074, most since March 6, last up 1.4% ** Co receives a purchase order from Heidelberg Materials Australia ** Purchase order for sale of a hydrogen fuel cell (HFC) truck, one of the first of its kind in the world ** Co's shares up despite losses suffered by the local benchmark, with .AXJO down 1.7% sector-wide (Reporting by Nichiket Sunil in Bengaluru) ((Nichiket.Sunil@thomsonreuters.com))