1. Osagwiritsa ntchito zida zowonongeka

2, mukamakweza, musapotoze, kudula

3, musalole kuti nsonga zotsekera

4, kupewa kung'amba kusoka commissure kapena kulemetsa ntchito

5, posuntha zitsulo, musazikokere

6, kupewa katundu wamphamvu kapena wodabwitsa

7, chipangizo chilichonse chiyenera kufufuzidwa musanagwiritse ntchito

8, Polyester imalimbana ndi ma inorganic acid, koma imakhala pachiwopsezo cha ma organic acid

9. Polypropylene ndi yoyenera kugwiritsidwa ntchito m'malo omwe sagonjetsedwa ndi mankhwala

10, nayiloni imatha kukana ma inorganic acid, osatetezeka ku kuwonongeka kwa organic acid

11. Nayiloni ikanyowa, imatha kutaya mpaka 15%.