BYS系(xi)列防(fang)爆(bao)揚(yang)(yang)聲(sheng)(sheng)器(qi)俗稱(cheng)防(fang)爆(bao)喇叭，主要用(yong)(yong)(yong)于危險場所，戶(hu)(hu)內戶(hu)(hu)外均可使用(yong)(yong)(yong)，本(ben)揚(yang)(yang)聲(sheng)(sheng)器(qi)質量輕(qing)，擴(kuo)音效果好(hao)，防(fang)爆(bao)等級高，使用(yong)(yong)(yong)壽命(ming)長，BYS系(xi)列防(fang)爆(bao)揚(yang)(yang)聲(sheng)(sheng)器(qi)廣(guang)泛(fan)應用(yong)(yong)(yong)于石(shi)油(you)、化工、油(you)庫、天然氣開采
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