Creating user form with drop down list boxes

Hello,
this is my first attemp at doing a "userform". I am looking for some help in creating a user form that enables users to choose items from drop down boxes, which shows next level drop down list items, then down to final drop down list with information based on first two choices..

I've attached the sample file for reference, any help to get me started would be greatly appreciated :-)

Thank you,

BTW: the file I attached can only be viewed after locally saving first...not sure why.

Dannypak try...

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the completed code would be

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