Material 321 stainless steel

|add time：2014-08-19|PV：25085

Material is 321 stainless steel material and the potential of the market demand of our country's land area and the United States are the same, a 960 square kilometers, a 9.3 million, but our infrastructure than a somebody else, for example, our railway is 100000 km, the United States is 260000 km, we only equal to 1/3 the somebody else, if with 1.34 billion people, in addition to the 100000 km railway rail length is everyone have a cigarette so long, so we are in this space is very large.Question, of course, consider the cost of investment and profit, so in order to with the pace of the era, constantly updated is a must, but using conventional material is still important.* (material 201 stainless steel)
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