Create table with primary key using two foreign keys

I have two tables:
Table1
idproduct (PK)
des_product
Table2
idclient (PK)
des_client
I need create a table like this:
Table3
idproduct (FK)(PK)
idclient (FK)(PK)
des_anything
So, what is the code sql for create this new table?
Thanks.
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See original post by invalid@example.com (piropeator)