Zogulitsazo zidapangidwa kuti zizigwiritsidwa ntchito mwa akatswiri a HVAC, makamaka odziwika m'malo owopsa, monga mpweya wophulika ndi fumbi.
Mark Ex db wosaphulika ⅡB T6 T5 Gb Ex TB IIIC T85°C Db, Zone 1 ndi 2 Fumbi chilengedwe zone 21 ndi 22.
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