It is required to register the basic information of all existing and new chemicals and chemical substances used in various products with an annual output of more than 1 ton. Only through the registration process of EU REACH, all existing and new chemicals with an annual output of more than 1 ton and chemical substances used in various products are required to register their basic information. Only registered substances can be produced or imported into the EU.

The manufacturer and importer of each substance shall submit the registration file of the substance to the Chemical Administration and pay the corresponding fee. However, it is required to jointly submit the registration information of the same substance, that is, follow the principle of "one substance, one registration". As the initial member of the joint registration, you can share the registration fee with other members.

In order to be easy to manage and accept the submission of a large number of registration files, the registration files submitted to the Chemical Department need to be processed electronically. The Chemical Administration Department will give each registration file received a registration number and registration date, and immediately transmit these information to the registrant.

Within three weeks after submitting the registration documents, the Chemical Department will confirm the completeness of the registration documents submitted to ensure that the files meet the requirements of REACH registration. If the registration file is incomplete, the Chemical Administration will notify the registrant to submit further information within the prescribed time limit within three weeks from the date of submission of registration to complete the registration file.

For phased substances, pre-registration procedures are provided. The pre-registered substances can continue to be produced and sold in the EU, and only need to be officially registered before the specified deadline.

For phased substances, a large number of registrations need to be completed within the time limit. Therefore, for each registration submitted, the Chemical Department needs to check whether the registration information is complete within 3 weeks; However, for each registration submitted within 2 months before the deadline of the notification, the EU will check whether the registration is complete within 3 months.

The registrant needs to submit the updated files to the Department of Chemists, Friends and Studies within the set time limit, and request to submit the missing information. The Chemical Department then determines the submission date of these information and further checks the integrity of the updated files within three weeks.

If the registrant fails to complete the registration within the time limit, the registration will be rejected by the Chemical Administration, and the manufacturer or importer will not be able to start or continue the manufacture or import of the substance.

If necessary, the Chemical Administration will transmit the registration file, registration number and date, and the results of the integrity inspection to the authorities of the Member States. The manufacturers and importers will establish that they can implement the action. The supplementary information submitted for incomplete archives shall be submitted to the competent authority together with the results of the second integrity inspection. Quality can be produced or imported in the EU.