Ukususela ekubeni isilawuli sokuqala esicwangcisiweyo (i-PC) saziswa e-United States kwi-1969, isetyenziswe ngokubanzi kulawulo lwamashishini.Kwiminyaka yakutshanje, i-China isanda kwamkela ulawulo lwePC kulawulo lombane lwezixhobo zenkqubo kwi-petroleum, iikhemikhali, oomatshini, imboni yokukhanya...
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