Crochet produce is a special wool knit organization, it has a "hollow, elastic, dense, soft and flexible" art style, product structure plasticity, can achieve unlimited style and any size, any mechanical product substitution not a feature of artistic artefacts. 
Crochet products, "hollow", refers to its organizational structure with a hollow artistic effect, can better inergration with the human clothing and decorative objects as a whole, the formation of a mutual set off the pecial effects. we can say that any form of flexible fiber fabrica are unmatched.