PH umbrella / Umbrella

One third of China's land mass was affected by acidrain nowadays.
To address this issue,we try our best to raise people's awareness of Acid Rain and realize that acid rain is just around us.Imaged that you are walking on the street when it suddenly rains,everyone open their umbrellas.And the umbrella change its colour from gray to bright when the rain touch the umbrella. The colorimetric card is marked on the umbrella with,you can know the level of Acid Rain Immediately.In this way,we can achieve the ultimate goal “awareness of environmental protection”.