The interior of UL fire door is filled with perlite fire door core plate, and the surface treatment is electrostatic polyurethane powder coating. UL fire door hardware standard configuration handle lock/escape push rod (pressure bar) lock, door closer, stainless steel hinge, stainless steel bolt, alignment device, worth mentioning, hardware accessories need to carry UL labels.

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.