... and China Travel Service HONEST-- VISA CONSOULTING ---------- INVITATION:Main Service Contents:Business InvitationDocument requirement: passport copy, visa record copy,processing time ... F/3invitation 3month single entry, 30days stay F visa.F/6Invitation 6month multy entry,30days stay each time ... ,F visa.F/12Invitation 12month multy entry,30days stay each time,F visa. invitation