Qualitative filter paper ,quantitative filter paper chemical analysis filter paper with high-quality cotton as raw materials, using modern unique paper technology and advanced papermaking equipment precision-built, which is high purification, homogeneous structure, with definite filtering speed and strength,witdely used for scientific reaching ,industry,agriculture,medicin &health and environment protection department and so on ,to do qualitative and quantitative analysis and qualitative and quantitative chromatographic analysis and testing purposes.