Fa'aoga Autu: E pei o vaila'au mata'utia, vaila'au fa'ato'aga ma vali vai, ma alamanuia vai.I vailaʻau, e masani ona faʻaaogaina i le gaosiga o vailaʻau mo le maʻisuka ma vailaʻau sulfa.E mafai foi ona faʻaaogaina e aveese ai oloa masima guanidine, thiourea, nitrocellulose stabilizer, paʻu vulcanization accelerator, uʻamea faʻamaʻaʻaina, lomitusi ma vali faʻapipiʻi sui, faʻapipiʻi, vailaʻau faʻapipiʻi, fetilaisa faʻapipiʻi ma le faʻafefeteina o le flocculant, ma isi.