China's bearing machinery freed from dependence on …

Domestic wind turbine bearings rely on foreign imports for a long period of time, which is expensive, increasing the cost per kilowatt of wind power equipment, and also restricting the decline in wind power costs. Domestic enterprises to explore the progress Currently, domestic wind power ...READING MORE...

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Treatment technology for underground water leakage acci…

(1) Water seepage (1) The wall of the roadway and the coal wall “hang sweat”. This is caused by the condensed pressure on the surface of the rock and coal seam after the pressure water seeps through the fine cracks. (2) The coal seam becomes cold. When the water content of the coal sea ...READING MORE...

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