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Smashing idea: how East Germany invented ‘unbreakable’ drinking glasses

www.theguardian.com Smashing idea: how East Germany invented ‘unbreakable’ drinking glasses

In the 1980s, a company called Superfest pioneered extra strong glass – but it disappeared with the fall of the Berlin Wall. Now it’s making a comeback

Smashing idea: how East Germany invented ‘unbreakable’ drinking glasses

(auf Englisch und leider mit recht schamloser Werbung für ein Startup am Ende)

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