Because of the company's sales growth rate continuously. We need to invest in new equipment to expand capacity to increase nearly every year, and every time a new machine is added, it must be added the labor as well. Who in the past might not have much problem. Because the labor and wages per person was not very high. But we found that from the year 2011, etc. Labor shortages and wage rate starts, it has soared as much as 1.5 doikradot scary in the year 2012, as shown in Figure 4-1, and likely will continue to increase gradually. It also found that one of the factors which is the electricity produced would tend to rise each year as well. As shown in Figure 4-2
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