The central competent authority may, by stages, designate the lists of existing chemical substances subject to standard registration, including the names of the chemical substances, quantity thresholds and deadlines for registration, based on the circumstances of the phase 1 registration of existing chemical substances.The quantity thresholds subject to the standard registration of existing chemical substances designated by stages pursuant to the previous paragraph are specified in Appendix 8, whereas the designated lists and deadlines are specified in Appendix 9.Registrants manufacturing or importing any existing chemical substances listed in Appendix 9 shall apply for the standard registration of such existing chemical substances and attach information, as specified in Appendixes 3 and 4.On-site isolated intermediates may be exempted from needing an application for the standard registration of existing chemical substances pursuant to the provisions of the preceding three paragraphs.Registrants manufacturing or importing existing chemical substances, which are not any of the chemical substances listed in Appendix 9 or do not meet the quantity thresholds in Appendix 8, may apply for the registration of chemical substances pursuant to paragraph 3.Appendix 3 Information Items, Regarding Registrants and Substances, of New and Existing Chemical Substances Subject to Standard Registration.pdfAppendix 4 Information Items, Regarding Hazard and Exposure Assessment, of New and Existing Chemical Substances Subject to Standard Registration.pdfAppendix 8 Quantity Thresholds for Existing Chemical Substances Subject to Standard Registration.pdfAppendix 9 Designated List of Existing Chemical Substances Subject to Standard Registration and Deadlines for Standard Registration.pdf