In 2009, the revenue of superhard materials of Huanghe Cyclone Company decreased by a large margin, with a year-on-year decline of 11.8%. At the same time, the operating income of three of the company's other five products decreased significantly – superhard materials. The operating income of products decreased by 8.23%, the operating income of construction machinery decreased by 11.30%, and the operating income of super-hard tool decreased by 14.84%. The operating income of super-hard composite materials and metal powders of other two products increased significantly, with an increase of 79.28% and 16.47%, but the contribution ratio of these two products to operating income is very small, 3% and 5% respectively.
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Abstract In 2009, the revenue of superhard materials of Huanghe Cyclone Company decreased by a large margin, with a year-on-year decline of 11.8%. At the same time, the operating income of three of the company's other five products decreased significantly – super hard material...