American standard fireproof door, WH certificate based on UL standard; British standard fire door, WH (UK) certificate based on BS476 standard. Our American standard fireproof door has 20-180 minute certificate. British standard fire doors have 30 to 120 minute certificates. Fire doors can be made of steel, wood, stainless steel, etc. Welcome to consult us.

Ọnụ ụzọ ọkụ ZHTdoors, afọ 31 nke mmepụta ihe na ọnụ ụzọ ọkụ na Windows. The isi UL ọkụ ọnụ ụzọ, EN ọkụ ọnụ ụzọ, BS EN ọkụ ọnụ ụzọ, wdg,..We nwere certification.ZHTdoors support OEM na free design.Our uru: Good quality, factory price, good service.Welcome to consult us.