I was wondering if anyone could provide some tips for writing a sponsorship letter. This letter will be sent to several businesses in my country. I will be asking for sponsorships my study trip to Los Angeles.

I am an international business student, next year we are going to a study trip. The travel expenses will be approximately $1300, everything included, for two weeks.
The teacher suggests that we start asking for sponsorship ourselves. The problem is I don't know how to write a letter asking for sponsorship. I have already been looking to some examples on this site, but I am not sure if in my case it will be the same.

If anyone could help me, it would be much appreciated.

IB Student [:^)]
Welcome student. Why not try to put something together, then post it here?
I am working on the company for two years.i want them to sponsor me with the money.my sallary from the company is to little to