Pintu baja tahan api, pintu tahan api, pintu internal tahan api

Engsel lawang geni ora gampang kobong, ora mbledhos, tahan banyu, tahan kimia, ora beracun lan nduweni kekuatan mekanik sing apik. Engsel lawang geni nduweni resistensi geni sing dhuwur. Ing test pembakaran simulasi, iku ora deform nalika suhu maksimum tekan 800 derajat, lan wis resistance geni apik lan resistance geni.

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