The calculation of tax and various terms associated with it make it difficult to grasp. TAN and TIN are two such terms that confuse a lot of people. Both these terms are relevant with respect to ...

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Data: SHFE, DCE market movement (Dec 09) SMM Morning Comment For SHFE Base Metals On December 9 Sales of Imported Tin Ingots Are Relatively Good, But Overall Spot Market Transactions Are Less Active ...

School of Chemistry, Biology and Environment, Yuxi Normal University, Yuxi, Yunnan 653100, PR China ...