Fiber pob lim yog spherical lim knotted los ntawm fiber ntau, piv nrog cov tsoos rigidity lim, muaj zoo elasticity, tsis floating, ntev ua hauj lwm lub sij hawm thiab me me lub taub hau poob.Nyob rau hauv cov txheej txheem lim, lim txheej sib txawv raws li cov kev taw qhia ntws yog me me, ntau accord nrog cov khoom siv lim zoo los ntawm qhov loj hauv qab me me porosity faib, yog li tsim cov lim ceev ceev, txiav cov pa phem, muaj peev xwm loj, cov nyhuv lim dej yog qhov zoo, rov siv dua dua. thiab tsis txhob hloov tag nrho thiab txuag Labor, thiab lwm yam.