Uhlaka lomnyango lomnyango we-UL ongashi wenziwe ngepuleti lensimbi, futhi iqabunga lomnyango lenziwe ngepuleti lensimbi, i-stainless steel plate, ne-coated steel plate. Ingaphakathi ligcwaliswe nge-perlite door core plate. Isilinganiso sokumelana nomlilo somnyango we-UL ongashisi imizuzu engama-20-180, sicela usithinte.

Iminyango yomlilo ye-ZHTdoors, iminyaka engu-31 yesipiliyoni sokukhiqiza eminyango yomlilo kanye neWindows. Iminyango yomlilo eyinhloko ye-UL, iminyango yomlilo ye-EN, iminyango yomlilo ye-BS EN, njll., Sine-certification.ZHTdoors isekela i-OEM kanye ne-design yamahhala.Izinzuzo zethu: ikhwalithi enhle, intengo yefekthri, isevisi enhle.Siyakwamukela ukuthi uxhumane nathi.