If you're looking to be a middle-man/Trader and are sure of customer support in the mid to
long-term, then you would do well to register a business for yourself. All you would need to
do is to issue documents throught your own company to the final buyer. They do not come
to know of your manufacturer and you do not lose sleep at night
This is different to being an agent - who works openly with the buyer and seller. In this
particular situation, the word trader would be more apt.
Good luck.