You can do upgrade, star level up and decompose equipment in Equipment Lab

★ Equipment star up:

1. The higher the value, the more materials will need to be consumed in order to further upgrade the piece of equipment.

2. Starring up equipment will increase its growth attribute.

★ Decomposed equipment:

1. Decomposing equipment will see you obtain gold and ore. 

2. You cannot decompose equipment which is currently being worn by a hero.

3. Decomposing equipment that has already been star levelled up will return most of the ore it consumed