Lapho umnyango womlilo ukhiqizwa futhi wakhiwe, uzoba nomthelela omuhle wokuvimbela umlilo kanye nokufakwa kwentuthu, futhi uhlangabezane nezidingo zokuzinza kokumelana nomlilo, ubuqotho kanye nokushisa ukushisa. Abakhiqizi beminyango yomlilo abajwayelekile futhi abajwayelekile basebenzisa amashidi ensimbi engagqwali asezingeni eliphezulu, abese ekhiqizwa isinyathelo ngesinyathelo.

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.