Izicabha zomlilo zikapende ezijwayelekile zaseMelika ze-UL, ezifakwe izingidi zomlilo, amahinge omlilo akhethekile, izivalo zeminyango yomlilo. Imikhiqizo yale nkampani ihlanganisa nezicabha zomlilo zensimbi, iminyango yomlilo yezinkuni zensimbi, amafasitela omlilo, njll. Siyakwamukela ukuthi uxhumane 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.