In addition, the production of which is the main raw material in the manufacture Billet other merchandise even more. Billet does not have to buy from other manufacturers. Reduce transportation costs were considered GBS however scaled down production costs only in proportion to the sales of special grade Billet total sales. Which is assumed to increase from 3.99 percent of total revenue in 2014 was 7.99 percent, 12.29 percent, 14.88 percent and 17.59 percent in 2014-2019, respectively.
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