韩国DANHI丹海气动元件，SVFM350系列2位5通机控阀人控阀气控阀手动阀按钮阀旋转选择阀滚轮阀手拉阀急停按钮阀，型号：SVFM350-02-00SVFM350-02-01SVFM350-02-01SSVFM350-02-30SVFM350-02-33SVFM350-02-34SVFM350-02-35SVFM350-02-37SVFM350-02-38。)