Welcome to QSi Holding Limited


QSi Holding Limited is a media technology company that is based in Hong Kong. The company emerged in 2008 as the result of a joint venture between Querendo Limited from Hong Kong and System Integration Air Traffic Management AB (also known as Si ATM) from Sweden. Read more...

Our Services

QSi Holding has three main services available for the public transportation and hospitality media sector: DA4FID™, DA4RID™ and The “Terminal”. What these products have in common is that they offer need-based media solutions with a low CPM (Cost Per Thousand Impressions) compared to other digital signage media.