Gabatarwa: A cikin duniyar fasaha da ke ci gaba da haɓakawa, bugu da ƙari (PCBs) sune kashin bayan na'urorin lantarki marasa adadi. A cikin shekaru da yawa, buƙatar ƙarami, sauri, kuma mafi inganci PCBs ya haɓaka, wanda ya haifar da haɓaka bincike da haɓakawa (R&D) da buƙatun ƙirƙira i.
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