VV SKLO zkouška kaleného skla
8:28
Added: 1 year ago
From: DENDRITconsulting
Views: 3,839
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  • preco je to sklo take pruzne?

    atomoyt 9 months ago

  • @atomoyt Protože prošlo pecí ve který je cca 690°C, následně zachlazené určitým tlakem vzduchu získalo tyto vlastnosti, věř mi, já kalím sklo..

    janectreb 7 months ago

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