Shawa mai zaman kansa ya tashi a cikin karni na 19, lokacin da ruwa ya shiga sararin gida.Kuma kawai an fara amfani da shawa wajen zubar da tsire-tsire.Har zuwa wata rana, saboda wata dama ta bazata, mutane sun gano cewa shawa na iya zama kamar ruwan sama don yin tasiri a jikin mutum, yana ba da jin daɗi da ɗan adam ke kawowa da jin daɗi.
Shower flower asperse ya shigo kasancewa.Kuma lokacin da ya zo ƙarni na 20, samfuran shawa sun shiga matakin haɓakawa.A shekara ta 1953, masana'anta na Hansge sun ƙirƙira gunkin shawa irin na farko.
A cikin 1968, Hansge ya fara gudanar da shawa mai daidaitawa, wanda aka kwaikwayi ba zato ba tsammani.Bayan fasahar shigar da iska (ɗakin da ke kan titi da aka fi sani da fasahar "Flying rain") ta bayyana, shawan yana da ƙarin ayyuka.
Lokacin aikawa: Agusta-14-2021