Yazisa: Kwihlabathi elihlala liguquka letekhnoloji, iibhodi zesekethe eziprintiweyo (PCBs) zingumqolo wezixhobo zombane ezingenakubalwa. Ukutyhubela iminyaka, imfuno yeePCB ezincinci, ezikhawulezayo, nezisebenza ngokufanelekileyo ziye zanda, zikhokelela kuphando olwandisiweyo kunye nophuhliso (R&D) kunye neemfuno ezintsha ...
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