34R8X-G1/2-D-H,34R8X-G3/4-D-H,34R8F-G1/4-A-S,34R8F-G3/8-A-S,四通手动转阀 34R8X-G1/2-D-H,34R8X-G3/4-D-H,34R8F-G1/4-A-S,34R8F 无锡市昌林自动化科技有限公司