Umnyango womlilo ungumnyango ongahlangabezana nezidingo zokuzinza kokumelana nomlilo, ubuqotho kanye nokushisa okushisayo phakathi nesikhathi esithile. Empeleni kunezinhlobo eziningi zeminyango yomlilo, njengeminyango yomlilo yamapulangwe, iminyango yomlilo yensimbi, iminyango yomlilo wezinkuni zensimbi, nezinye iminyango yomlilo. Siyakwamukela ukuxhumana nathi.

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.