I Believe That All Children In The World Will Love The Idea Of Sending Secret Messages With Invisible Ink.

This Is The Simplest Thing, But It Is Really Interesting. When Writing Notes With These Pens, The Words Disappear Almost Immediately. But There Is A Special Purple Light On The Other End Of These Pens, And The Message Appears When You Shine It With The Light! In The Various Festivals At The Party, These Pen Clubs Are The Focus Of The Party, Because It Is Sure To Bring Surprises To People.

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