Fire doors are divided into steel fire doors, wood fire doors, steel wood fire doors and fire doors made of other materials. From the perspective of fundamental fire resistance, steel fire doors are better than other products of the same type in terms of their own structures and internal fillers. Wooden fire doors are definitely not as fire resistant as steel ones.

ZHTdoors menyako ea mollo, lilemo tse 31 tsa boiphihlelo ba tlhahiso menyakong ea mollo le Windows. Menyako e ka sehloohong ea mollo oa UL, mamati a mollo oa EN, mamati a mollo a BS EN, joalo-joalo,.Re na le setifikeiti.ZHTdoors tšehetso OEM le mahala moralo.Melemo ea rona: boleng bo botle, theko ea fektheri, tšebeletso e ntle.Rea u amohela ho buisana le rona.