Analysis of Imported Metal Processing Machines in China

According to the latest statistics released by China Customs, in February 2012, China imported 7,742 metal processing machine tools with an import value of US$1.13 billion, and the unit price of imports dropped by US$146,000. In January-February 2012, China imported 13,124 Taiwanese metal

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Hydraulic control valve types and working principle

1. The concept of hydraulic control valve: The hydraulic control valve is the valve controlled by water pressure. It consists of a main valve and its attached conduit, pilot valve, needle valve, ball valve and pressure gauge. 2, the type of hydraulic control valve: According to the purpos

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