... top sizing to artpaper, surface-resistance paper, blue-print base paper, kraft paper. It could highen the properties of ... , polypropylene and others to use in instrument packing, printing plate.5. Acetalized devivative: PVA and formaldehyde, acetaldehyde, butyraldehyde ... used in coating, leather, paper for cetamics, aluminum foil, copper clad plate, security glass and so on.6. Raw material of fiber ...