need recommendations for grand format banner HARDWARE

Hi,

I am looking for recommendations on companies that manufacture/sell hardware for grand format banners, like:
- on building banners.
- huge banners out on lawns, fields (on-fence mounting is not an option).
- light pole banners (this one is easy, I have found plenty on the internet).

I understand this could be custom work.

Thank you,
RC

P.S. Moderator/Admin, please move to appropriate forum if this is the wrong choice.