1. Njikere nke #Coal #Tar #Pitch bụ mmepụta na imepụta ọkwa carbon. Ọkwa graphitization nke carbon na coal tar pitch dị elu, yabụ enwere ike iji ya dị ka ihe na-arapara na electrode ígwè. N'akụkụ a, enwere ọtụtụ ụdị na ọtụtụ mpaghara metụtara. 2. Maka ihe ndị sitere n'okike, a na-agwakọta ya na mmanụ ọkụ ma ọ bụ mee ka ọ bụrụ ihe na-adịghị mma maka itinye ya, nke nwere ike inwe mmetụta nke ịgbanwe mmanụ ọkụ ruo n'ókè ụfọdụ. 3. Site n'ịgwọ ihe ndị na-anaghị amị amị nke e ji arụ ụlọ na ihe ndị e ji emechi paịpụ mgbe e mechara mmepụta ma hazie ha. Mkpuchi ụlọ coal tar nke Epoxy bụ nke a na-ejikarị eme ihe.
