Specification for oil filter paper: 1) weight: 120-145gsm 2) thickness: 0.45mm 3) air permeability (200pa l/100cmª.Min): no less than 450 4) burst strength (kpa): no less than 200 5) resin content (%): 20~22 6) maximum pore size: 90 7) mean pore size: 75 8) corrugated depth (mm): 0.25 9) paper color as requested 10) roll length and roll inner pore diameter as requested 11) plain paper or corrugated paper as requested Kraft paper (standard at your request)