The latest data of China Coal Machinery Industry Association show that the market share of electrohydraulic control system of domestic hydraulic supports for the first time exceeded 80%, the dependence on imports has been greatly reduced. Domestic enterprises have broken through the precision processing of the guide valve, anti-interference communication and other key technologies, the product failure rate has fallen below 5%. Experts predict that with the spread of intelligent mining, annual growth rates in this segment will remain above 15%.