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Taiwan Provincial Standard of the People's Republic of China, ????

American Society for Testing and Materials (ASTM), ????

Association Francaise de Normalisation, ????

PL-PKN, ????

Spanish Association for Standardization (UNE), ????

German Institute for Standardization, ????

SCC, ????

IT-UNI, ????

AT-ON, ????

Lithuanian Standards Office , ????

RU-GOST R, ????

Danish Standards Foundation, ????





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