Nk’uko ibitangazamakuru byo mu mahanga bibitangaza ku ya 29 Gicurasi, ku isi hosealuminiumproducer yavuze amadorari 175 kuri toni kugirango aluminium premium yoherezwe mu Buyapani mu gihembwe cya gatatu cyuyu mwaka, ikaba iri hejuru ya 18-21% ugereranije n’igiciro mu gihembwe cya kabiri. Nta gushidikanya ko aya magambo yazamutse agaragaza impungenge zikenewe ku isoko rya aluminiyumu ku isi.

 
Aluminium premium, nkitandukaniro riri hagati yigiciro cya aluminium nigiciro cyibipimo, mubisanzwe bifatwa nka barometero yo gutanga isoko nibisabwa. Mu gihembwe cya kabiri cy'uyu mwaka, abaguzi b'Abayapani bemeye kwishyura igihembo cy'amadolari 145 kugeza $ 148 kuri toni ya aluminium, yiyongereye ugereranije n'igihembwe gishize. Ariko mugihe twinjiye mugihembwe cya gatatu, izamuka ryibiciro bya aluminiyumu biratangaje cyane, byerekana ko impagarara zitangwa ku isoko rya aluminiyumu zigenda ziyongera.
Intandaro yibi bihe bitoroshye biri mubutunzi bwibisabwa ku isoko rya aluminiyumu ku isi. Ku ruhande rumwe, kwiyongera kwinshi kwa aluminiyumu ikoreshwa mu karere k’Uburayi byatumye abakora aluminium ku isi bahindukira ku isoko ry’Uburayi, bityo kugabanuka kwa aluminium mu karere ka Aziya. Ukuhereza ibicuruzwa mu karere byongereye ikibazo cyo kubura aluminiyumu mu karere ka Aziya, cyane cyane ku isoko ry’Ubuyapani.

 
Ku rundi ruhande, premium ya aluminium muri Amerika ya Ruguru iri hejuru cyane ugereranije no muri Aziya, ibyo bikaba binagaragaza ubusumbane mu isoko rya aluminiyumu ku isi. Ubu busumbane ntibugaragara mu karere gusa, ahubwo bugaragara no ku isi yose. Iterambere ry’ubukungu bw’isi yose, isabwa rya aluminiyumu rigenda ryiyongera buhoro buhoro, ariko itangwa ntiryagumye mu gihe gikwiye, bituma ibiciro bya aluminiyumu bikomeza kwiyongera.

 
Nubwo isoko ryinshi rya aluminiyumu ku isi, abaguzi ba aluminiyumu y’Abayapani bemeza ko amagambo yatanzwe n’abatanga aluminiyumu yo mu mahanga ari menshi cyane. Ibi biterwa ahanini n’ubushake buke bwa aluminiyumu mu nganda z’inganda n’ubwubatsi mu Buyapani, hamwe n’ibarura rya aluminiyumu yo mu gihugu mu Buyapani. Kubwibyo, Abayapani bagura aluminiyumu baritonda kubijyanye nabatanga ibicuruzwa byo hanze ya aluminium.