HG2-DG,HG1-DG,直动式减压阀
HG2-DG1-02A,HG2-DG2-02A,HG2-DG3-02A,HG2-DG4-02A,
HG2-DG1K-02A,无锡昌林HG2-DG2K-02A,HG2-DG3K-02A,HG2-DG4K-02A,
HG1-DG1-03,HG1-DG2-03,HG1-DG3-03,HG1-DG1K-03,
HG1-DG2K-03,HG1-DG3K-03,无锡昌林HG1-DG1-06,HG1-DG2-06,
HG1-DG3-06,HG1-DG1K-06,HG1-DG2K-06,HG1-DG3K-06,