Har'a likhalase tse koahelang likhalase tseo re fanang ka tsona, 30% e sebelisoa indastering ea bongaka, 'me ho na le mehlala e makholo le e menyenyane e nang le litšobotsi tsa eona.Kajeno, ke tla hlophisa litšobotsi tsa likhalase tsena tse koahelang indasteri ea bongaka.1, Khalase e futhumetseng Ha e bapisoa le khalase ea PMMA, ...
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