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A ṣe awọn abẹla ni ibamu si gbogbo awọn ajohunše ASTM (ailewu). Gbongbo n ṣe awọn wicks owu gbogbo-adayeba ti ara wọn ati idanwo sisun 1, 000 awọn abẹla ni gbogbo ọjọ lati ṣayẹwo jijo oorun, itujade, soot, agbara ina, iduroṣinṣin, igbesi aye iwulo, kanga, ṣiṣan, ati akoko sisun.
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