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At the same time, the Federal Trade Commission took the unusual step of announcing an investigation into whether Facebook had violated a 2011 consent decree, exposing the company to a multi-billion dollar fine.

At the launch ceremony, Philippine consumers experienced buying goods and services through scanning QR codes by a mobile phone app called GCash. Business owners also benefited from not having to install expensive machines as they only needed a QR code sticker which buyers can scan to pay.

At the trade fair, 110 delegates from 30 Chinese provinces and autonomous regions set up shops at the China pavilion, which is modeled after a bullet train. The delegates are in London for three days and aim to cut deals with travel agents from other nations to boost Chinese inbound travel.

At the end of the 12th Five-Year Plan (2011-15), the country's iron and steel capacity amounted to 1.13 billion tons, which severely saturated the market, while the ratio of 10 largest enterprises' capacity against the overall capacity dropped from 49 percent in 2010 to 34 percent in 2015, according to the State Information Center, an institution directly affiliated to the NDRC.

At some scenic sites, tourists can scan QR codes with their mobile phones to receive 80 centimeters of toilet paper. They can scan the codes multiple times for more paper, but have to pay if they scan too many times.