Brief: Advanced Card Systems says Tan Keng Boon retired as executive director
May 20 (Reuters) - Advanced Card Systems Holdings Ltd 2086.HK : * Tan keng boon retired from office as executive director of the company * Source text for Eikon urn:newsml:reuters.com:*:nHKS7dvCvR ((For more news, please click here 2086.HK )) ((Bengaluru Newsroom; +91 80 6749 1130))