Mutane suna buga alamu a kan gwangwanin shayi, ta yadda gwangwanin shayi ba kawai suna taka rawa wajen adana abinci ba, har ma suna da siffar ado, wanda zai iya jawo hankalin abokan ciniki. Gwangwanin gwangwani masu kyau dole ne su bi tsarin bugu mai rikitarwa don cimma sakamako. Akwatin gwangwani na baƙin ƙarfe na shayi da aka yi da tinplate yawanci suna buƙatar a rufe shi da wani nau'in fenti a saman saman ƙarfe na ciki na ƙarfe bisa ga sifofin abubuwan da ke cikin (shayi) don hana abin da ke ciki ya lalata bangon gwangwani da abubuwan da ke ciki daga gurɓata, wanda ke da fa'ida don adana dogon lokaci. Don shayi, don hana curling bayan aiwatarwa, ɓarna baƙin ƙarfe da tsatsa, Hakanan wajibi ne a yi amfani da fenti na ado don ƙara bayyanar. Domin yi na ciki shafi na shayi gwangwani, shi dole ne ba kawai da lalata juriya, mai kyau mannewa, sassauci, wadanda ba mai guba, wari, saduwa da abinci tsabta da kuma aminci bukatun, amma kuma dole ne a yi dumama da ciki gyara shafi a cikin post-tsari kamar high-mita juriya waldi gida high-zazzabi dumama, da kuma yi na high-zazzabi Canjin zafi a lokacin dafa abinci a lokacin zafi da zafin jiki ° C bayan 121C.