Sweaters nthawi zambiri amakhala ndi vuto la mapiritsi, ndiyeno ma sweti abwino amavalidwa kwa nthawi yayitali, padzakhala zovuta zina za mapiritsi, chifukwa chiyani ma sweti azinthu izi ndi osavuta kupiritsa?
1. Zinthu zopangira: kukweza kwa zinthu zaubweya zaubweya, kumapangitsa kuti ubweya ukhale wabwino, mamba owundana kwambiri, digirii yopindika ndi yabwino, imakhala yofewa, koma yosavuta kupindika, kupiritsa.
2. kapangidwe ka minofu ya nsalu ndi yosiyana (singano yathyathyathya, Yuan Bao, Yuan Bao iwiri, ndi zina), kachulukidwe kosiyana (yotayirira, yolimba) idzatulutsanso magawo osiyanasiyana azinthu zamapiritsi, State Technical Supervision Bureau of pilling test imakhazikitsidwa pamitundu yosiyanasiyana ya mulu (kuwerengera) yolukidwa mu kachulukidwe kameneka, kapangidwe ka minofu kachitsanzo pamlingo womwe wasankhidwa mubokosi loyesa, kenako mubokosi la pilling.
3. kuvala ndi zinthu zosiyanasiyana (yosalala, akhakula) kukhudzana, adzatulutsanso madigiri osiyana pilling chodabwitsa, manja, matumba ndi mbali zina za mikangano pafupipafupi ndi zosavuta pilling.
4. kuchokera ku ndondomekoyi: ngati kupotoza kumakhala kotayirira, muluwo ndi wozungulira komanso wonenepa, mzerewo ndi wodzaza, koma wosavuta kupiritsa, mosiyana ndi kupindika kumakhala kolimba, kumataya kalembedwe ka mulu, ngati chingwe.