Polyester Spun Yarn 10/4,10/5,10/6,20/4,20/6,20/8,20/9 for bag closing thread Industrial bag closing sewing thread is in high tenacity and stable quality. It is widely used in feeding plants, fertilizer plants, cement plants, rice plants, building materials factories. It can be used for the seam bottom of woven bag, paper bag, jute bag and composite material bag. Our bag closing sewing thread use best raw material, and use advanced production technology. With raw material of 100% polyester fiber, it's alkali resistance, corrosion resistance, acid resistance and other characteristics. Specification(mainly): 10S/2 10S/3 10S/4 10S/5 10S/6 10S/7 12S/2 12S/3 12S/4 12S/5 18s/2 18s/3 18s/4 18s/5 18s/6 18s/7 18s/9 20S/2 20S/3 20S/4 20S/5 20S/6 20s/7 20s/8 20s/9 20S/2*3 20S/3*3 Weight: A)Small cones 100-250 grams/cone ect. B)Big packages 1 kg-8 kg/cone C)Other length or weight of thread are also available upon request from clients Cone:paper cone or pastic cone Package:Carton or PP bag Color :white,red and more than 20 colors.