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防爆標志Ex-marking：Ex d ⅡB T3/DIP A20 TA,T3

外殼材質(zhì)：無銅鋁合金壓鑄，拋丸，聚脂靜電噴塑

Enclosure: Die-casted with aluminum alloy without copper, shot blasting, 

Enclosure: electrostatic polyester-sprayed