It is the warranty on iPhones and iPads that may not be be honored outside the country in which they were purchased.
Bought through normal channels, the warranty on Mac computers is international. However, I believe, as Roger suggests, that Apple may not honor a "grey-market" warranty; that is something you should seriously consider. There may also be US export restrictions on some technology or model configurations. Apple has the licenses; you don't.
Apple has been historically very protective of there sales outlets, and we see many problems here with people, especially outside the US, who buy from a non-approved source and find themselves in a world of service and warranty problems
There is however, something much more concerning going on here. You are asking important business questions not of Apple but rather end-user volunteers who help with technical issues. That is like walking into the hairdressers' school and asking for advice on brain surgery. I admire your desire to create a business but you need a professional consultant savvy not only in your country's business laws but also international import/export. We cannot do that, and that is outside the scope of these forums.
Also, putting a business plan up on open international forums viewed by millions around the world is absolutely bad form. Were I an investment banker and someone came to me for a loan with "I asked in the Apple Users forums" in his proposal, I would politely invite that person to leave my office.