Dị ka ụlọ ọrụ teknụzụ dị elu nwere mmepe ngwaahịa, nrụpụta, na nnwale, NBC nwere ikike ịnye azịza ahaziri ahazi.Anyị nwere patent 60+ na ikike ọgụgụ isi mepụtara onwe ya.Usoro njikọ ike anyị zuru oke, sitere na 3A ruo 1000A, agafeela UL, CUL, T ...
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