<prompt> Translate the following text to EnglishKampuni nyingine za kutengeneza bidhaa za kuondoa zebaki zinatumia mbinu za kuondoa zebaki, lakini kwa sasa, vifaa vya kuondoa zebaki ni sawa na vifaa vya kuondoa zebaki.  <response>: Some companies offer other sorbent-based methods for reduction of mercury emissions; however, the equipment used is very similar in scope to the equipment used for ACI. 