@aqelyazid , I am assuming here that your partnership is formed under US laws ( probably a Delaware or Nebraska or similar ) and that you have an agent ( a US person ). Thereafter, instead of my paraphrasing information, I attach the following from the IRS --
Helpful hints for partnerships with foreign partners | Internal Revenue Service
BTW, which country are you from ? Did you apply for a TIN ( Tax ID -- ITIN ) for each of the foreign partners ?
Is there more I can do for you ?