【Objective】By revealing the import and export trade development and changing trends through year 2001 to2015,we can determine and evaluate the intra-industry trade types of Chinese rosin.【Methods】We used various types of intra-industry trade indices such as the trade theory model,the least squares method,the multiple linear regression residual mathematical model and the Mat Lab software,combined with calculations from the year 2001 to 2015 of intra-industry trade import and export data index.【Results】After ...
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