Technology: Ex-heating tube, which is heated by the blast and explosion-proof box with wiring from.
工艺：防爆式加热管，它是由防爆加热管与防爆接线盒配合而成。
The 6 wiring way, steel tube or cable, explosion-proof hose can be;
布线方式，钢管或电缆、防爆软管均可；
The 6 wiring way, steel tube or cable, explosion-proof hose can be;
布线方式，钢管或电缆、防爆软管均可；
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