Kukhona iminyango ekhethekile yokuvala umlilo emalolini omlilo, cishe zonke ezenziwe nge-aluminium alloy. Lo mnyango wesivalo somlilo uyavuleka futhi uvale ngokushesha, ugijimane nesikhathi. Iphansi lekhethini lomnyango lenzelwe ukusetshenziswa kuzo zonke izinhlobo zomhlabathi ezingalingani futhi zingahlanganiswa ngokuqinile.

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.