Pall ring,CMR,IMTP 1.material:sus 2.finish:plain 3.chemical packing Metal pall ring, stainless steel pall ring, metallic pall ring1.material:sus2.finish:plain3.features : thin wall, heat resistant, high free volume, high capacity, low resistance, high separation efficiency and so on.4.application: rectification towers under vacuum to treat thermosensitive, decomposable, polymerizable or cokable ...