How to combine multiple rows of duplicate data and one cell of unique data

[scpg13]

I have a customer list of over 7000. In columns A-J, lists the customers information and in column K the type of product. There are rows with duplicate customer information (up to 12 rows) because of the different products in the last column.

I would like to have a list that combines the duplicate customer information into a single row and lists the different products in one cell separating each with a comma.

Is there an easy way I can do this? I'm having such a hard time and I also looked in the forum for the equation but was unsuccessful.

I appreciate the help in advance!
Sample-Data.xlsx