Fire-Resistant-Doors

Fire doors are divided into normally open fire doors and normally closed fire doors. Normally open fire doors are kept open at ordinary times and are used for passing. Normally closed fire doors can effectively prevent the invasion of smoke and fire after a fire, so they are one of the important measures for fire protection.

Fire-Resistant-Doors-Ụzọ ZTFIRE- Ọnụ ụzọ ọkụ,Ọnụ ọkụ na-ekpuchi ọkụ, Ọnụ ụzọ ọkụ ọkụ, Ọnụ ụzọ na-eguzogide ọkụ, Ọnụ ụzọ ígwè, Ọnụ ụzọ ígwè, Ọnụ ụzọ ọpụpụ