By certification 
Polyester filter fabrics
Variety:Polyester long thread and Polyester staple fiber products.
Performance:
A. Resist strong acid and weak alkali.
B. It? stable to thick abio-acid in low temperature, not dissolved in organic acid, but can be dissolved in thick vitriol and heated cresol.
C. It? easily hydrolyzed in strong alkali.
D. The temperature used within 120℃ and the instant temperature can be up to 150℃.
Variety:Polyester long thread and Polyester staple fiber products.
Performance:
A. Resist strong acid and weak alkali.
B. It? stable to thick abio-acid in low temperature, not dissolved in organic acid, but can be dissolved in thick vitriol and heated cresol.
C. It? easily hydrolyzed in strong alkali.
D. The temperature used within 120℃ and the instant temperature can be up to 150℃.