** Blue Star BLUS.NS hits two-month high of 2,225 rupees as Indian AC makers jump as much as 4%
** Critical AC and refrigerator components exempted from mandatory Bureau of Indian Standards (BIS) certification to prevent shortage during summer, Economic Times reports
** AC makers had highlighted potential shortage due to lack of BIS certification of copper and compressor vendors from China and other countries
** Amber Enterprises India AMBE.NS and Voltas VOLT.NS gain ~3% and ~4%, respectively, to one-month highs; Havells India HVEL.NS adds 2%
** AMBE surges 21% so far in March after warm summer forecast; HVEL, BLUS and VOLT up 8%-15%
** YTD, BLUE rises 4%; HVEL, AMBE and VOLT fall 7%-15%
(Reporting by Vivek Kumar M)
((VivekKumar.M@thomsonreuters.com;))