TWCA, with 158,991,530 in capital, is mainly composed of four main shareholders ,TWSE (Taiwan Stock Exchange Corporation), FISC (Financial Information Service Corporation), TRADEVAN(Trade-van Information Services Corporation) and TDCC (Taiwan Depository & Clearing Corporation). Not only in capital pooling,. TWCA also integrates main shareholders long-term technology, practice and experience in the industries of banking, securities and insurance , providing the most consolidate on-line financial security certificate service and embarking on the installation and promotion of sound financial security environment, to ensure the security of on-line finance and electronic commercial trade .