1, different sources: polyester fiber is a chemical fiber products, is a petrochemical product synthesis, and soybean fiber is made from soy protein and then through the spinning process of man-made fibers, the composition is closer to silk.

2, the use of different: Soybean fiber is widely used in textiles, clothing, home and other areas, such as soybean fiber T-shirt, soybean fiber bedding, soybean fiber curtains. Polyester fiber, on the other hand, because of its stable performance, easy processing, wide range of uses and other characteristics, is widely used in textiles, clothing, printing, construction and other fields, such as polyester fiber clothing, polyester fiber plastic bags, polyester fiber rubber bands.