According to statistics, the export volume of China's (tariff number) in February 2012 was 83000 tons, an increase of 1.63 compared with that in January. Imports and some domestic joint ventures can reach 10000 tons, an increase of 2.2 compared with the same period last year The vibration of the testing machine is mostly 470000 tons caused by the problems of sensors and controllers; The average import price in February was 1507 US dollars/ton, an increase of 2.49% compared with the average price in January, and a decrease of 4.89% compared with the same period last year, leaving only hollow vessels
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