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1. Alcoa: 1888 онд байгуулагдсан Америкын уг компани нь хөнгөн цагаан болон төмөрлөг боловсруулдаг дэлхийд нөлөө бүхий компани. Эндээс нийлүүлсэн хөнгөн цагаан, төмөрлөгийг онгоц, машин, зар сурталчилгааны тээврийн хэрэгсэл, сав, баглаа боодол, газ, тос болон үйлдвэрлэлийн тоног төхөөрөмжинд дэлхий даяар өргөнөөр ашигладаг. …
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