Might want to edit that you're possibly showing 2 real email addresses there which means they can be harvested for spam etc.
Also I wouldn't engage from your real email address!! Might not be a drama but it's cleaner & safer all round to use a burner.
Anyway, I wonder if you negotiate enough whether you can get a sample or even photos..
I'm sure if you explain that they have 900kgs they can surely spare 0.1g for testing.