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Water brush-bottle cap
when we pour the boiled water into bottle, after a while,the vapor liquefy by the cold bottle cap which will be adhered by lost of water drop. we open the cap, the water will fall down on the book or desk,it is quite annoying.
This bottle cap with water brush can solve this problem.
when the bottle cap was revoled,the pole of the cap will be locked by two small things stick out. Then the water drop which adhere to the cap will be swept into the bottle.
Guangdong Ocean University