| 摘要 |
PURPOSE: An umbrella and an advertisement method are provided to obtain excellent advertisement effect. CONSTITUTION: An umbrella comprises: an umbrella rod(110) with a predetermined length; a handle(120) which is coupled at the lower end of the umbrella rod; an umbrella rib(130) which is radially coupled at the upper end of the umbrella rib; a waterproof fabric(140) which is attached on the upper end of the umbrella rib; a reagent which is coated on the upper surface of the waterproof fabric; and a selective transmission film which is adjacently attached to the upper surface of the waterproof fabric. The selective transmission film transmits particles of an acid rain particle size. The reagent is chromogenic within a predetermined color range according to acidity. |
