GD-J series high-vacuum flap valve is used to cut off or connect air stream in vacuum system.

GD - J系列高真空挡板阀是用于真空系统中用来切断或接通气流之用。

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GD-J series high-vacuum flap valve is used to cut off or connect air stream in vacuum system.

GD - J系列高真空挡板阀是用于真空系统中用来切断或接通气流之用。

youdao