... in Naoh 28 days later 3) Made by C-glass or E-glass fibers woven roving as basis material, and then treated with acrylic acid ... 4mm/75g/m2, 90g/m2, 110g/m2,125g/m2, 135g/m2, 145g/m2, 160g/m2, etc. 10mm x 10mm/90g/m2, 110g/m2, 125g/m2, 135g/m2. 145g/m2, 150g/m2,160g/m2,etc ...