Amapayipi ashiselwe efektri ukuze ahlolwe ngokuqinile ukuze kuqinisekiswe ukuthotshelwa kwezimiso zekhwalithi yamapayipi kanye nezidingo zabasebenzisi.Izinto zokuhlola amapayipi ngokuvamile zihlanganisa: izinto zokuhlolwa kwefekthri zinekhwalithi yokubukeka, ubuqotho, ubukhulu, nezinye izinhlobo ze-weld qual...
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