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paper unit Source：http://www.szggys.com/News_View.aspx?id=31Datetime：2015-06-10 Brief:paper unit A. g: weight of one square meter (length x width ÷ 2) =g for weight B.: 500 sheets of paper: (factory spec) C. ton: normal unit 1 ton = 1000 kg, used to calculate price of paper.。3 |
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