Firms which apply to use self-prepared seals and are required to submit a certificate of compliance with CNS 17712 standards for high-security seals pursuant to Article 9 may substitute it with the certificate of compliance with ISO 17712 standards (edition released in 2010 or afterwards) for high-security seal issued by agencies, laboratories, or research centers which are compliant with the ISO/IEC 17025 standards certified by International Organization for Standardization.Where the self-prepared seals applied for certification under the preceding paragraph are bolt seals, the samples shall be certified by the institutions, laboratories, or research centers listed in the appended Table 1 that the shaft of a pin and the base of a bush are not able to be spun or twisted over 360°in opposite direction without using tools once the pin has been inserted into the bush. If the bolt seal is forcibly spun or twisted by tools and leads to different spinning status, evidence or marks of the malicious tampering shall be kept for visual inspection.Table 1：List of Institutions, Laboratories, or Research Centers Commissioned to Certify and Test Self-prepared Seals and Operational Regulations.PDF