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CNS 6939 Standard english version introduction

CNS General No. 6939
Classified No. M3031
Quality Standard of Rock Dust Used in Coal Mines
煤礦用石粉之品質標準
Date of Approval
Bureau of Standards, Metrology and Inspection Date of Revision
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CNS Standard Code CNS 6939
CNS Standard Classified No. M3031
CNS Standard English Title Quality Standard of Rock Dust Used in Coal Mines
CNS Standard Chinese Title 煤礦用石粉之品質標準
CNS Standard Edition 1981-1-1
CNS Standard Pages 2
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