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DE??? ?? ??
?? 12??? ??? ?? ??? ??? ??? ??.
?? ???? ??? ?? ??? ??? ??? ??? ????: ?? ??, ??.
PL-PKN, ??? ?? ??
RO-ASRO, ??? ?? ??
German Institute for Standardization, ??? ?? ??
CZ-CSN, ??? ?? ??
American Society for Testing and Materials (ASTM), ??? ?? ??
Professional Standard - Building Materials, ??? ?? ??
Professional Standard - Light Industry, ??? ?? ??