C—funnel / funnel

Existing funnel is circular, and the bottle mouth is round too, so the funnel and the mouth of bottle fit together tight. when we use the funnel, as the liquid in the bottle incresased,the air in the bottle can’t be discharged smoothly and the pressure in the bottle will increase, which causes the liquid can not be smoothly flow down. C-funnel changes the filler’s round shape. Firstly, the air in the bottle can be discharged smoothly and the liquid can flow down more rapid and smoothly .Secondly, the funnel can be stably placed on the table. Once again, the funnel would not be stained as the head of the funnel would not touch the table.