4 元券截止阀合金导热DN5010010¥910去看看知遥臻选发布了J4B1W-16H.5哈氏合金截止阀汽导热45油蒸截止阀DN501001012 元券节流截止阀导热KJL41Y829F64C¥3380去看看语薇臻选发布了KJL41Y829F64C抗硫节流截止阀蒸-汽导热5油止阀截DN5010010