Mist spray bottles offer a continuous spray that lasts for a few seconds.This is detailed design of spray mist plastic bottle including all parts that you need to manufacture the same bottle. However some parts should be verified in case to be manufactured using injection plastic.You can use the CAD files provided here using any CAD software.In case of 3d printing the parts you should be aware about the thickness of the printed items and take care about the overhang area.