¡ó our polyester fiber clean wipers are produced by 100% polyester long fiber double-knit satin. ¡ó apply laser or ultrasonic cut sealing technology on the 4 edges, could effectively prevent the drop of dusts and fibers. ¡ó very well water and oil absorb quality and very low ion residues. ¡óthe product is cleaned and packed under class 10 cleanroom(iso4 grade). ¡ó cleaned by 18 megohm deionized water to make sure the product is cleaned to the highest extent. ¡ó strictly apply iso9001:2000 quality management system, ensure the stable of the product quality.