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Summary: Control standard for radioactive substances in building materials mixed with industrial waste - Determination of stead[Read the full text]
Summary: There are six levels of volumetric density: B, B, B, B, B, and B Marking examples: strength level A, bulk density lev[Read the full text]
Summary: If the purchasing unit needs other specifications, they can negotiate with the production factory to determine. Speci[Read the full text]
Summary: The following standards contain provisions that constitute the provisions of this standard by reference in this stand[Read the full text]
