1)old and mature item                                                  

2)iron springs as frame connectors                            

3)iron screw or rivet for connecting the round 12.2mm  aluminum poles

4)also the square black plastic joints have new type 

5)can be curved or straight display shape            

6)with 2 pcs of halogen lights(110v/220v)              

7)packed in oxford cloth trolley case(round /square) usually, if hard plastic trolley case, additional cost

Spring POP UP display