what's the meaning of the word"W-9" in the sentence
问题描述：
what's the meaning of the word"W-9" in the sentence
Hi Eden we received the revised mop with white handle and dark blue head.That is what were going to go with in production.I’m sending over po today.Can you please send me a W-9 for our files.Also let me know if you need anything from me.What are your terms as well.
Thanks,
also the meaning of word"Po"in sentence is not clear!all which came from a email about international trade
答
PO :Purchase Order