In reply to jwa:
I've recieved climbing items from online shops in the post wrapped in a manner where the I can see the textiles through holes in the packaging, I've also recieved items that contain corrosive liquid from other online shops (most likely against the rules), could the unknow cases of corrosion be linked to this form of contamination. Apparently many of the manufacturers also ship climbing goods to shops only in cardboard with no plastic seal.
Seeing as we are not supposed to buy climbing goods of unknown history / second hand, isn't this form of transit also a form of this?