good qualities is the plural form of good quality.

good quality

Usage note
This phrase may be written "good-quality" when it is used as an adjective.
good quality
phrase
1. (degree of excellence) 
Brian doesn't like to spend a lot of money, but he likes to buy things that are of good quality.A Brian no le gusta gastar mucho dinero, pero le gusta comprar cosas que son de buena calidad.
2. (characteristic) 
George has many good qualities.George tiene varias cualidades buenas.
Examples
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