Sgwrs gyda Richard Hughes o Gaernarfon, sy'n gweithio i un o gwmnïau optegol mwya'r byd. Gari chats with Richard Hughes from one of the world's leading optical companies. Show more
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Sgwrs gyda Richard Hughes o Gaernarfon, sy'n gweithio i un o gwmnïau optegol mwya'r byd. Gari chats with Richard Hughes from one of the world's leading optical companies. Show more