filter cloth paraprint ol60 100 viscose chemical bonding weight 60 gsm thickness 0 4 mm width 700 mm x length 150 meters used in filtration system of bmf sy stem make twe dierdorf gmbh co warranty period 30 months after the date of delivery filter cloth paraprint ol60 100 viscose chemical bonding weight 60 gsm thickness 0 4 mm width 700 mm x length 150 meters used in filtration system of bmf sy stem make twe dierdorf gmbh co warranty period 30 months after the date of delivery