... ,etc. Tensile properties: Polyester curtain line stretches up the lower rate, rapid take-up, and once they are tensioned, the screen ... but also extend its service lifePermanent smoothness: Polyester screen line-up not hygroscopic, after years of use, it's smooth ... curtain of wear and tearEnvironmental protection: Polyester screen line up without corrosion, non-polluting, has played the role of ...