About CSM

CSM Media Research is a joint venture between CTR Market Research (the leading market research company in China) and the TNS Group. Dedicated to TV & radio audience measurement research, CSM Media Research offers reliable and uninterrupted rating information for Hong Kong SAR and China. As the “currency” of the TV, radio broadcasting & advertising trade, CSM Media Research operates the world's largest TV & radio audience measurement panel, covering China’s 1.2 billion TV populations and Hong Kong SAR’s 6.3 million TV & radio audience. This operation therefore covers 216 individual markets (comprising the national entity, 24 provinces and 191 cities including the Hong Kong SAR), with some 54,000 homes and 178,800 panelists participating in the measurement of over 1,288 main channels and 384 radio frequencies , every day of the year.