I heard putting "Insured" on a box helped - as the transport company will track down who bent it and bend them.
That doesn't make sense. Insured means someone else will pay for the damage. The number are too small to pursue any real case and insurers wouldn't stand a chance anyway.
The way I heard it, the courier company mostly self insures, they know exactly who moved what box where and when, this data is easily collected and collated, see a pattern and they come looking.
I transported a 3458A 700km for calibration, when I mentioned the replacement value in the insurance application, the attitude of the courier changed. I also used the same courier as keysight.
All my dealings with insurers, they are no fools, their legal, logistic and statistical knowledge is generally 'good' ie to their benefit.
I have learned the hard way, in my one significant dispute with an insurer, I was getting nowhere until I asked a friend, a 'loss adjuster' to act as my agent to deal with the company in the matter - he assured me that my case was good - they found in my favour in less than a day.