It's probably just someone who makes / sells braid and want's to see what the market is, find out who the incumbent suppliers are etc etc. It's hardly a complex or vexatious request compared to some you see come up on "what do they know" .
Edit to add, here's a cracker...
Would it be possible for technical details regarding the now retired
UGM-27 Polaris Chevaline Re-entry Body (ReB) / Re-entry Vehicle, to be
made available.
details such as:
Process of Manafacture
Weight
Geometry
Length
Diameter
Angles
Radius of each sloping section
Probably came with a self addressed envelope to Kim, N Korea.