A. Bambancin diamita: Gabaɗaya ƙarami ƙarami tara shine diamita tsakanin 0.5-1.5mm kuma mafi girma barbashi yumbu tsakanin 1.0-2.5mm, ko 2-4mm
An san cewa siffar yumbura shine siffar ƙananan ƙwayoyin cuta. Lokacin kwanciya, ana buƙatar takamaiman manne don haɗawa don samar da farfajiyar hanya. Saboda nau'in amfani da shi, ana amfani da shi sau da yawa a cikin shimfidar yumbu. Yana iya haifar da fasa saboda kwanciya mara kyau, amma ta yaya za a magance wannan yanayin?
Tare da saurin bunƙasa tattalin arziƙi da zamani, an kawar da shingen siminti na gargajiya sannu a hankali kuma an maye gurbinsu da shimfidar yumbun mu. Dutsen yumbu ya zama alamar biranen zamani, kuma yana nuna halaye da salon kowane birni, kuma yana da kyau sosai kuma yana da tasiri. Mutane da yawa suna tunanin cewa barbashi yumbura masu launi ne na filayen filastik, amma a zahiri sun bambanta.
Abubuwan yumbu masu launin sabon nau'in kayan da aka saba amfani da su a ƙasashe daban-daban. Wannan samfurin da ake amfani da ko'ina ga pavement ãyõyi a kan manyan tituna, filayen jirgin sama, filin jirgin sama runways, Railway tashoshin, subways, bas tasha, parking lots, Parks, murabba'ai, makarantu da hotels, ofishin gine-gine, da dai sauransu A halin yanzu samfurin ne manyan sabon abu a cikin kasuwa dangane da gina al'ummomin shimfidar wurare na birane da kuma kawata yanayin birane.
Barbashi yumbu samfuri ne masu inganci waɗanda kamfaninmu ke samarwa. Masu amfani da damar yin marhabin da shingen yumbu mai launi mai launi saboda launi mai haske. Pavement na yumbu mai launi ya shahara saboda kyawawan bayyanarsa, mutunci mai kyau, yana iya zaɓar zane-zane da launuka bisa ga fifikon mutum, ƙananan farashi fiye da toshe saman Layer, ingantaccen gini, da ɗan gajeren lokacin gini. Amfanin shi ne cewa ya dace da zirga-zirgar zirga-zirga.
Barbashi yumbu sun bambanta da na yau da kullun kwalta. Barbashi yumbu masu launin sabon nau'in kayan da aka saba amfani da shi a ƙasashe daban-daban. Ana amfani da wannan samfurin sosai don alamun lallausan kan tituna, filayen jirgin sama, titin jirgin sama, tashoshin jirgin ƙasa, titin jirgin ƙasa, tasha bas, wuraren ajiye motoci, wuraren shakatawa, murabba'ai, makarantu da otal-otal, gine-ginen ofis, da sauransu.