<prompt> Translate the following text to SwahiliOne estimate is that, as demand for installation resources increase for FGD and other air pollution control installations, planned FGD retrofit installations could be between 30 and 42 months1 while another source estimates FGD installations at 36 months.  <response>: Kwa mujibu wa makadirio ya utafiti, kwa sababu ya kuongezeka kwa mahitaji ya vifaa vya ufungaji kwa ajili ya FGD na vifaa vingine vya udhibiti wa uchafuzi wa hewa, mipango ya ufungaji wa FGD inaweza kuwa kati ya miezi 30 na 42, wakati chanzo kingine kinakadiria FGD katika miezi 36. 