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Summary: Blocks are divided into three levels based on dimensional deviation, appearance quality, volumetric density, and comp[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]
Summary: There are six levels of volumetric density: B, B, B, B B, and B There are six levels of volumetric density: B, B, B, [Read the full text]
