KS C 5511-1987(2022)
Portable megaphones
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KS C 5511-1987(2022)
Standard No.
KS C 5511-1987(2022)
Release Date
1987
Published By
KR-KS
Latest
KS C 5511-1987(2022)
KS C 5511-1987(2022) history
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KS C 5511-1987(2022)
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KS C 5511-1987(2017)
1987
KS C 5511-1987
Portable megaphones
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KS C 5511-1972
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