Umugqa wokuvala umnyango ongashi ufakwe ngaphansi komnyango ongashi. Uma umnyango uvaliwe, uzonweba ngokuzenzakalelayo uphawu olunyakazayo ukuze ucindezele phansi futhi uvale igebe phakathi kwephansi lomnyango kanye nomhlabathi. Umucu wokuvala umnyango womlilo uvimbela intuthu enobuthi ukuthi ingangeni ekamelweni ngesikhala esingezansi komnyango ekuqaleni komlilo.

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.