Features: 1) Filter media: Polyester ALU coating 2) Source of media: Germany, Japan or China 3) Excellent resistance against electric conductance Construction: 1) Top cap: open steel plate, no rust 2) End cap: open or closed steel plate, no rust 3) Filter surface: various available 4) Inner core: galvanized mesh 5) Outer strip band: one piece as reinforcement 6) Gasket: specialty rubber to ensure airtight sealing Chemical Resistance: 1) Oil and water resistance: good 2) Hydrolysis resistance: Good 3) Acid resistance: Good 4) Alkaline Resistance: Good Dust Release: Excellent Applicable Temperature: Moisture 90 C, Dry 120 C