Ii-roller shutters zithandwa ngenxa yokuqina kwazo, ukhuseleko kunye nokulula ukusetyenziswa. Ezi ngcango zixhomekeke kumatshini we-coil spring ukuze isebenze ngokufanelekileyo, iqinisekisa ukusebenza kakuhle kunye nokukhusela ekuqhekekeni okungalindelekanga. Nangona kunjalo, ngokuhamba kwexesha, le mithombo ingaphulukana noxinzelelo okanye ikhefu, ichaphazela i-fu iyonke ...
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