Properies	Polyester Fiber	Polyproylene Fiber	Polyamide Fiber	Polyvinyl Alcohol Fiber
Acid-resisting	Strong	All Right	Weak	Non-acid resisting soda
Alkalinity-resisting	Weakness-resisting	Strong	All Right	Weakness-resisting
Corrosion-resisting	All Right	Bad	Bad	All Right
Electrification	Bad	All Right	Good	Normal
Splitting and elongation	30%-40%	Better than polyester	18℃ -45℃	15%-25%
Return Ability	Very Good	A little better than Polyester	Very Good	Weak
Abrasion Resistance	Very Good	Good	Very Good	Good
Heat-resisting	120℃	90℃	130℃ a little Contraction	100℃ a little Contraction
Softening-resisting	230℃-240℃	140℃-150℃	180℃	200℃
Melting-point	255℃-265℃	165℃-170℃	210℃-215℃	220℃