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规格0.4-0.8cm,品位75-82,白度75-82
规格0.8-2cm,品位78-83,白度79-82
规格10-20cm,品位78-83,白度80-85
规格1-4cm,品位70-78,白度70-75
规格30-40cm,品位75-80,白度78-82