Na farko, lura da bayyanar: dinki na tawul yana da kyau, kullun yana da kyau, faɗin daidai yake, a kwance kuma a tsaye, ba maɗaukaki ba kuma ba a jujjuya ba, maƙarƙashiya daidai ne, tsayin gashi yana da kyau, zoben karammiski yana tsaye;Tawul ɗin hannu a matakin ido, zoben karammiski mai haske da tsafta, tsaftataccen lint na waje yana da kyau.Launi mai haske mai haske, ba tare da zurfin abin da bai dace ba ya fi kyau.
Na biyu, taɓa hannu: tawul ɗin auduga mai kyau yana jin ƙanƙara, taushi kuma babu santsi.Rike hannun hannu mai laushi da na roba, kada a kashe.
Na uku, kamshi: Kyawawan tawul ba sa wari.Idan akwai ƙanshin kyandir ko ƙanshin ammonia, yana nuna mai laushi mai yawa;Idan akwai dandano mai tsami, ƙimar PH na iya wuce misali;Idan akwai ɗanɗano mai ɗanɗano, yana nufin cewa yin amfani da wakili mai gyara wanda ya ƙunshi formaldehyde, hazo na formaldehyde kyauta.
Na hudu, auna hygroscopicity: rataye tawul, tsoma hannu a cikin ruwa zuwa tawul, ruwa ba ya juyewa, yana nuna saurin sha da watsawa, mai kyau hygroscopicity;Idan akwai digo na ruwa, ana ba da shawarar cewa tawul ɗin da ke cikin softener ya wuce kima ko tacewa bai isa ba.
Na biyar, saurin launi: na farko 80 ℃ ko haka ruwan zafi a cikin kwano, sa'an nan a cikin tawul sama da ƙasa wanke tide.Ruwan da ke cikin kwandon kuma ba ya canza launi;Idan akwai faɗuwar launi, yana nuna cewa ingancin bugu da rini ba su da kyau kuma suna cutar da lafiyar ɗan adam.
Sabili da haka, muna ba da shawarar ku gwada siyan tawul a cikin manyan kantunan kasuwa, manyan kantuna ko shagunan, kuma zaɓi samfuran daga masana'anta na yau da kullun.Samfurin tawul ɗin da ya cancanta yana da alamar ma'auni, yana nuna mai ƙira, wurin asali, lambar tarho, alamar kasuwanci, ƙa'idar aiwatarwa, hanyar wankewa da sauransu, kuma farashin yana da ma'ana, kuɗin yana da daraja.
Lokacin aikawa: Agusta-25-2022