Unfortunately, they are all very noisy, they are not sharp (to the point of being blurry), they all have blown highlights (beyond what you would normally expect for fireworks) and they are poorly composed.
Take a look at the many firewoks photos that are already available for comparison.
In addition to the comments of madscica, the manufacturer's logo is shown clearly on some of the images, which would have caused them to be rejected as an IP violation.
I agree with the other two replies, but especially clone out those logos on future submissions.
Thanks all - I appreciate your feedback!