Ama-roller shutters adumile ngenxa yokuqina kwawo, ukuphepha kanye nokusebenziseka kalula. Lezi zicabha zithembele emshinini we-coil spring ukuze usebenze kahle, uqiniseke ukuthi usebenza kahle futhi uvikelekile ekuqhekekeni okungalindelekile. Kodwa-ke, ngokuhamba kwesikhathi, lezi ziphethu zingalahlekelwa ukungezwani noma ukuphuka, okuthinta i-fu yonke ...
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