Anyone know who manufacturers this line? I've had the opportunity to have some hands-on experience with some of their sun frames lately and have been impressed with the quality, especially vs. some of the established, name-brand lines (sturdy construction, comfort, ease of adjustability, hinge sturdiness, etc). All of my searches just take me back to Wal-Mart, and it's difficult for me to believe that they could be churning out this quality of a product.