Twasezeranije gutanga igiciro cyo guhatana, ibicuruzwa byiza nibisubizo bisumba - ubuziranenge, icyarimwe no gutanga byihuse kumuringa (II),Umuringa wumuringa,Umuringa (Ii) chloride ultra yumye,Umuringa (Ii) Carboxide Hydroxide (2: 1: 2),Umuringa Carbonate Cu55%. Duhumetswe n'isoko ryihuta ryibiryo byihuse kandi bigakoreshwa cyane kwisi, dutegereje kuzakorana nabafatanyabikorwa / abakiriya kugirango tugere hamwe. Ibicuruzwa bizatanga ku isi hose, nk'Uburayi, Amerika, Ositaraliya, Vietnam, Uruganda rwa Panama, rufite abakozi bakuru 200, bafite abakozi 200, muri bo harimo abayobozi ba tekinike 5. Dufite kabuhariwe mu gutanga umusaruro. Tumaze uburambe bukize mu kohereza hanze. Murakaza neza kuri Twandikire kandi ikibazo cyawe kizasubizwa vuba bishoboka.
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