As specified in the revised Toxic Chemical Substances Control Act (Taiwan TCSCA), the new chemical substance should be registered 90 days before manufacture or importation, which has caused great uncertainty in the industry. Based on this the registration dossier should be prepared very early at least half a month before the implementation of the revised Taiwan TCSCA on 11 Dec 2014 to avoid any disturbances to business activities. The issuance of the registration details of new chemical substances was delayed until recently. Taiwan EPA published the draft Regulation on Registration of New and Existing Chemical Substances on 25 Aug for public consultation.