4.Ndalama zoyambira zopangira zikwangwani wamba ndizochepa, chifukwa ma signboards nthawi zambiri amapangidwa ndi mapanelo opangidwanso ndi acrylic.Komabe, mapanelo adzazimiririka, kupunduka, dent ndi mavuto ena mkati mwa miyezi 3 mpaka 5, zomwe zimafupikitsa kwambiri moyo wautumiki wa chizindikirocho.
5.Popanga mabokosi owunikira achikhalidwe, guluu wa chloroform dilute nthawi zambiri amagwiritsidwa ntchito kulumikiza ma swatches ndi mapanelo.Ntchito yosindikiza ndi yofooka, ndipo imatha kutengera kutentha ndi zinthu zosuntha zomwe zimayambitsa ming'alu.Fumbi ndi dothi zimasonkhanitsidwa mosavuta pamaswachi ndi mapanelo pambuyo potsukidwa ndi mvula.Choncho, fumbi ndi dothi sizingathe kutsukidwa, ndipo zidzakhudza kuwala kwa chizindikirocho komanso kuwononga maonekedwe a signboard.
6.Mabokosi owunikira achikhalidwe amasinthidwa molingana ndi miyeso yapamalo.Ngati sitolo isuntha, chiwerengero choyambirira chogwiritsira ntchito zikwangwani ndizochepera 5%.