Firms applying for the usage of other self-prepared seals than general mechanical seal shall first apply with Customs Administration, Ministry of Finance (hereinafter referred as “Customs Administration”) for certification via document review and then apply with the competent field Customs at the place of import/export for eligibility verification.Firms applying with Customs Administration for certification via document review under the preceding paragraph shall submit an application form for the usage of self-prepared high-security mechanical freight container seals or electronic seals and an affidavit of confidentiality as well as complementary documents and materials listed in the application form. The application form and affidavit shall be stamped with the corporate seal and the seal of the responsible person of the firm.Institutions, laboratories, or research centers to certify and test self-prepared seals and required complementary items and documents as well as the operational regulations are prescribed in the appended Table 1.Customs Administration holds the rights of modifying or ending the contents of certification and testing conducted by agencies, laboratories, or research centers prescribed in the appended Table 1.Where the self-prepared seals are certified by Customs Administration through document review, the competent field Customs should be notified with a certain amount of enclosed samples of seals.Firms applying with the competent field Customs for eligibility verification pursuant to Paragraph 1 shall fill in an application form for eligibility verification of the usage of self-prepared high-security mechanical freight container seals or electronic seals and an affidavit of confidentiality with complementary documents and materials listed in the application form. Where the application is made by an agent, the proxy agreement between the firm and the agent must be attached. Sea freight forwarders or logistic centers shall provide the list of the owners of the containers entrusted or stored by them.Customs shall notify firms for necessary supplement and corrections within a certain period of time if the documents or materials provided are not complete during the application for the usage of self-prepared seals. If the firm fails to supplement or correct within the given date, the application shall be rejected.Table 1：List of Institutions, Laboratories, or Research Centers Commissioned to Certify and Test Self-prepared Seals and Operational Regulations.PDF