Ingaphakathi lomnyango womlilo we-UL ligcwele ipuleti eliyinhloko lomnyango womlilo we-perlite, futhi ukwelashwa okungaphezulu kuyi-electrostatic polyurethane powder coating. Isibambo se-UL yomnyango wezingxenyekazi zekhompiyutha yomlilo ejwayelekile isibambo sesikhiye/induku yokuphusha (i-pressure bar), isivalo esiseduze, ihinge yensimbi engagqwali, ibhawodi lensimbi engagqwali, idivayisi yokuqondanisa, okufanele ibalulwe, izesekeli zehadiwe zidinga ukuthwala amalebula e-UL.

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.