provision on sale of goods approval basis to another state

We have query for abc com in delhi we are going for the exhibition in
Raipur(Chhattisgarh) and they have made sale of goods on
approval basis to name of manager of abc com.and billing have
been made to the name of manager and she will sent the goods on her name
and in exhibition the stall will be in the name of abc com.and they will
sold goods in Raipur and they will issue invoice in the name of manager
unsold stock will be returned to abc com.approval.
please tell me solutions.