防爆标志Ex-marking：Ex nA Ⅱ T3～T4/DIP A20 TA,T3～T4

防爆标志Ex-marking：Ex e Ⅱ T3～T4/DIP A20 TA,T3～T4

外壳材质：耐酸不锈钢或碳钢，聚脂静电喷塑

Enclosure: Acid-resistant stainless steel or carbon steel，electrostatic polyester-sprayed