... 208, 130, 240, 2602) Thick and dense model: 3014, 3927, 4030, 8223) Double layer model: 903, 3751, 3850Polypropylene fabrics series, which made ... PP long thread fabrics, and PP monofilament fabricsand PP double layer fabrics. These products possess the properties of strong acid ... staple fabrics and PA long thread fabrics and PA double layer fabrics. Theseproducts possess the properties of weak acid ...