** Shares of Hazer Group ASX:HZR rise as much as 3.3% to A$0.465, posting their biggest intraday pct gain since November 25
** Environmental services company says it has extended its existing non-binding MoU with South Korea's POSCO Steel KRX:058430 for a further two years
** Extension sets out next steps in preparing a project pathway for the integration of Hazer's technology into POSCO's proprietary low-carbon steel process, says co
** Stock at highest level since November 28
** HZR currently up 2.8%, bringing YTD gains to 23.3%