How to check original casio fx 991es plus 2nd edition

How to check original casio fx 991es plus 2nd edition
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#TechEpu #Tutorial

[@bikelover5729]

You are bangali?

[@yushamehran5464]

its tik mark
lol

[@avorgahemmanuel759]

Link bro to download the app

[@Jakeya-y9o]

See the qr code scan it and tap on the link you will get the authenticity😊