There is still a big gap between the production technology level of local hydraulic enterprises in my country and foreign advanced enterprises. Local hydraulic companies have insufficient independent innovation and R&D capabilities, and most of the hydraulic products they produce are at the middle and low end of the value chain. The development of high-end hydraulic components lags behind the downstream equipment manufacturing industry. Domestic host manufacturers cannot purchase high-end hydraulic products from local hydraulic companies. As a result, a large number of high-end hydraulic components need to rely on imports.

In 2019, 2020 and 2021, my country's total imports of hydraulic products were US$3.15 billion, US$3.17 billion and US$3.57 billion, respectively. 2.11 billion US dollars, the amount of imports is far greater than the amount of exports. If the hydraulic components produced by some domestic hydraulic companies are considered for export markets, the domestic supply gap will further expand.

In 2021, the hydraulic components with the largest production value distribution of key enterprises in my country's hydraulic industry are hydraulic cylinders, accounting for 35.6%, while hydraulic valves, hydraulic pumps, hydraulic motors and other products with higher technical difficulty and higher added value will be distributed in production value. less proportion. Hydraulic valves, hydraulic pumps and hydraulic motors are the key areas in China's hydraulic industry that need to be localized.