Pambuyo pa makina osokera akukumana ndi kusamutsidwa kuchokera ku Ulaya ndi United States kupita ku Japan, South Korea, Taiwan ndi Singapore, adasamutsidwa kwathunthu ku China kuyambira kumayambiriro kwa zaka za m'ma 1990.Kumayambiriro kwa zaka za zana la 21, opitilira 70% padziko lapansi ...
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