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        "http://www.w3.org/ns/prov#value" : [ "Hello, maybe some one already solve similar problem in EWM Packaging Specification: Packaging Specification for each level calculate volume and weight using volume and weight from base unit of measure.But, for example inner or case can have different volume, because they pack in vacum. 1 PC = 0,023 dm31 CASE\\BOX = 2500 PC = 30 dm3, but in Packaging Specification system calculate 0.023 ?? 2500 = 57" ] ,
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