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Las patentes de humo de Wang Ji | Sociedad | EL PAÍS
elpais.com
Un empresario chino registró cientos de diseños. Las tiendas se niegan a pagar
Guardian: Spain's king of the e-cigarette | World news | The Guardian
Registering every design for the product in Spain, one man is set to make a fortune out of a boom in smokeless cigarettes
Where there’s smoke, there’s ire | In English | EL PAÍS
elpais.com
The burgeoning e-cigarette industry is making a lot of people a lot of money. But vendors in Spain have a problem the patents of Wang Ji
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