CRI previously known as Radio Peking, broadcasts in about 56 languages including Hindi, Bengali and Urdu besides Tamil and English every day.
The CRI Tamil service was founded in Aug 1, 1963 and has expanded its operations on a multimedia communication platform with a mixture of shortwave broadcasting service, FM service, website, mobile and magazine services.
The service at present provides eight hours of programme everyday which included four-hour shortwave service and four FM service broadcasts from Colombo.
Senior Indian diplomat Vinod K Jacob felicitated the Tamil Service on the golden jubilee.
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The Tamil service has attracted large overseas listeners and has over 350 listeners clubs, a CRI press release said.
It also said that plans are afoot to introduce Tamil software to mobile phone users to provide information about China.
The Tamil service like the Hindi and Bengali services are mostly run by the Chinese students who have learnt the languages in the Peking University, which runs language courses in vast number of foreign languages.