Cov ntaub ntawv ntawm cov qhov rooj hluav taws kub qib B muaj xws li ntoo, hlau, steel ntoo, thiab lwm yam. Chav B fireproof qhov rooj yuav tsum muaj qhov hluav taws kub tsis zoo ntawm lub qhov rooj ntawm lub qhov rooj yuav tsum tshaj 1h. 1.2 hli tuab electrolytic phaj los yog galvanized ntawv yuav tsum tau siv rau lub qhov rooj ncej, thiab 0.8 hli tuab electrolytic phaj los yog galvanized ntawv yuav tsum tau siv rau lub qhov rooj nplooj.

https://ztfiredoor.com/25597.html

hlau hluav taws qhov rooj,hluav taws kub qhov rooj manufacturing, hluav taws kub-resistant qhov rooj,prehung internal hluav taws qhov rooj,fire door closer, qhov rooj tiv thaiv hluav taws,ul hluav taws ntsuas qhov rooj,tsev so qhov rooj khoom ntoo sib xyaw hluav taws qhov rooj,hlau hluav taws qhov rooj,hluav taws qhov rooj,,prehung internal hluav taws qhov rooj,hluav taws kub tsis kam steel qhov rooj,ul hluav taws ntsuas qhov rooj,tawm qhov rooj hluav taws,hlau hluav taws qhov rooj,qhov rooj lag luam sab nrauv hluav taws kub ntsuas steel qhov rooj,ul hluav taws ntsuas qhov rooj,prehung internal hluav taws qhov rooj