sale of assets in the winding up

ashif (student) (73 Points)

24 June 2019  
I have constituted partnership firm and taken regular GST registration . I have claimed input tax credit on purchase of assets but not availed it( not setted off against my output tax liability) . now I am winding up my firm and I decided to sell my assets. what is the procedure under GST ?
do I need to collect tax from the person I sell my assets?
do I could claim refund of GST paid on purchase of assets ??
please help me