D671X氣動蝶閥 D371X 脫(tuo)硫蝶(die)閥 D71X中(zhong)線對(dui)夾軟密封蝶閥 TD641W氣動通(tong)風蝶閥 D643H氣動法蘭連接(jie)金屬密封蝶閥(fa) D343H 硬密封三偏心蝶閥(fa) D673H氣動對夾式硬密封蝶(die)閥