Chocolate Melting Problem

I am from India and am facing problems while wrapping chocolates, especially during the summer season. I would like to mention that I do not have an air conditioner in my house, where the manufacturing process takes place. By the time I complete wrapping a few molded chocolates, the others become saggy, and I have to melt and mold them again.

I read somewhere that adding a bit of paraffin wax helps resolve this problem. Is this true. If not, can anybody please provide me with a solution? Thanks in advance.

Sanjay