防爆标志Ex-marking：Ex deⅡB T6/DIP A20 TA,T6

外壳材质：碳钢、耐酸不锈钢或无铜铝合金铸造，抛丸，聚脂静电喷塑（不锈钢可抛光）

Enclosure: Carbon steel、 acid-resistant stainless steel or die-casted  with aluminum alloy without copper，shot blasting，electrostatic polyester-sprayed (stainless steel enclosure with  polishing surface－plating)