I-graphite crucible yimveliso ekhethekileyo edlala indima ebalulekileyo kwinkqubo yokucoca igolide, isilivere, ubhedu kunye nezinye izitye ezixabisekileyo. Nangona abantu abaninzi besenokungayiqhelanga, ukuveliswa kweecrucibles zegraphite kubandakanya ezininzi ...
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