Northman台湾北部精机,两通常闭式锥阀SV12-20S-N-0-DG,SV12-20S-N-0-DL,SV12-20S-V-12-DR,SV12-20S-V-12-AG,SV12-20S-V-12-AP,SV12-20M-N-230-DG,SV12-20M-N-230-DL,SV12-20M-N-230-DR,SV12-20M-V-230-AG,SV12-20M-V-230-AP