awọn onka rẹ ti awọn oṣere ti a ṣe apẹrẹ fun iṣakoso damper ni awọn agbegbe / awọn ibi iṣẹ pẹlu awọn gaasi ti o lewu bugbamu, nya tabi eruku combustible ni HVAC, epo, epo-epo, irin-irin, awọn ọkọ oju omi, awọn ohun elo agbara, awọn ohun elo agbara iparun, awọn ohun elo elegbogi, ati bẹbẹ lọ O ti gba Iwe-ẹri dandan China (CCC), Iwe-ẹri EACX, Russia ati IEC.
Aami-ẹri bugbamu: Gaasi Ex db ⅡC T6 Gb / Eruku Ex tb ⅢC T85℃ Db