BKG1.6T-BKG4T温度修正燃气表

G6T-G25T温度修正燃气表

QK6000电子式燃气表

BK-G1.6  Ⅲ

BK-G2.5  Ⅲ

BK-G1.6  Ⅱ

BK-G2.5  Ⅱ

BK-G4  Ⅱ型膜