Imveliso yenzelwe ukusetyenziswa kwiingcali ze-HVAC, ngakumbi ezikhethekileyo kwindawo enobungozi, njengomoya oqhumayo kunye nothuli.
I-Mark-proof-proof Mark Ex db ⅡB T6 T5 Gb Ex TB IIIC T85°C Db, indawo yosetyenziso 1 kunye no-2 indawo engqonge uthuli 21 no-22.
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