A new kind of dropper tube is invented, which can help people inject Vitamin D precisely. Vitamin D is filled in measuring drops in this invention so that it can be safer and more accurate. It should be practical and easy to take vitamin D since babies and child under 3 years old usually take 400-600 international units (I.E.) of vitamin D every day.

This kind of system can control every drop, of which involve 200 I.E. of vitamin D so it is not difficult to eat 400-600 I.E. of vitamin D. One of the packaging is convenient since it can be inserted into mouth directly. Some dropper tubes with special materialcan even protect products and prevent hazardous substances, like moisture and oxygen. Thus, it canextent expiration time compared with traditional polyethylene or polypropylene packaging.

However, the process to develop the new dropper tubes wasn’t smooth. The caps had tobe redesigned cause the caps of the first trial pack were easy to be broken when overtighten. This VD is welcomed among customers because of its packaging convenience and precision.