Development of mine - purpose pre - alarming apparatus for secondary explosion 智能矿用二次爆炸预警仪的研制
Product synopsis also called wireless to smog alarm apparatus , uses in the smog which sends out to each kind of early fire promptly makes reports to the police 产品简介也称无线离子式烟雾报警器,用于对各类早期火灾发出的烟雾及时作出报警。