1. ʻO ka laulā noi o #Coal #Tar #Pitch ka hana ʻana a me ka hana ʻana i ka pae kalapona. He kiʻekiʻe ke kiʻekiʻe o ka graphitization o ke kalapona i ka pitch tar, no laila hiki ke hoʻohana ʻia e like me ka electrode adhesive a metala. Ma kēia ʻano, nui nā ʻano a me nā ʻāpana ākea e pili ana. 2. No nā mea kūlohelohe, hui pū ʻia me ka ʻaila hinu a i ʻole i hana ʻia i slurry no ka noi ʻana, hiki ke loaʻa ka hopena o ka hoʻololi ʻana i ka ʻaila hinu i kekahi ʻano. 3. Ma ka hoʻonāʻana i nā mea waiʻole i hoʻohanaʻia i ke kūkulu hale a me nā paipu paipu ma hope o ka hanaʻana a me ka hanaʻana. ʻO ka epoxy coal tar pitch building coating ka mea i hoʻohana nui ʻia.