Smashing idea: how East Germany invented 'unbreakable' drinking glasses
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
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