Industry analysts say, has been in a downward trend in 2007
, air-conditioned raw material costs in the March to May between the steep rise, such as copper have been from the beginning to 5.5 yuan / ton up to a maximum of 76,000 yuan / ton; steel Market entry of seasonal consumption season, the domestic steel mills have raised prices of steel, while steel and copper as the major raw materials, air conditioning, air conditioning will certainly affect the price.