Kubera ubufasha buhebuje, ibicuruzwa bitandukanye byo hejuru nibisubizo, ibiciro bikabije no gutanga neza, twishimira gukundwa cyane mu bakiriya bacu. Turi ubucuruzi bwingufu nisoko ryinshi rya karubone (Cuco3),Umuringa wa chloride (CUCL2),Umuringa (Ii) karubone reagent gr &,Umuringa oxide cu2o,Umuringa (Ii) Carboxide Hydroxide (2: 1: 2). Twabaye kandi ishami rya OEE ryashyizweho kubirango byinshi byisi. Murakaza neza kutugeraho kubiganiro byinshi nubufatanye. Ibicuruzwa bizatanga ku isi hose, nk'Uburayi, Amerika, Ositaraliya, Uruguay, Espanye, Ikigereki. Ikibindi Hamwe niyi nkunga zose, turashobora gukorera buri mukiriya ufite ibicuruzwa byiza nigihe cyo kohereza mugihe gikwiye. Kuba ikigo gikura gikura, ntidushobora kuba byiza, ariko turimo tugerageza uko dushoboye kose kuba umufasha wawe mwiza.
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