不銹鋼 SPU225H-03 G3/8(3分),不銹鋼 SPU225H-04 G1/2(4分),常閉活塞蒸汽電磁閥 不銹鋼 SPU225H-06 G3/4(6分),不銹鋼 SPU225H-08 G1(一寸),常閉高溫高壓電磁閥