To promote Bucalus’s reliable soundproof systems, special musical cards were created in order to arouse interests in an engaging way.

The covers of the cards mimic Bucalus’s windows, and upon opening, noises on the streets commonly heard in China on a daily basis – from construction sites, crowds and traffic jams – hits the audience. Once they 'close the window', they shut out the urban noise completely.

After the campaign has launched, Bucalus's business increased around 9% within 2 months and more potential business partners visited the client's factory.