Need a local Brazilian for a business invitation letter

Hello, Thank you for your help. We paln to make a trip to Brazil and thus need: 1) A formal business invitation letter; you are free to use a formal template online, but it should contain the necessary info of the contact person (probably, you or anybody else suitable), telephone number, CNPJ and others required by the Brazilian law. 2) Your reasonable requirement of the fee for the translation/interpretation between English and Protugese per week or per month. We may require you to work continuously with us for at least one week or even one month. 3) Your location. We are very likely to visit Sao Paulo and the surrounding areas and we'll cover your travel fees with us. Please first take into consideration of the invitation letter here. After that, we are happy to go on cooperate with you in the following steps of the translation and local arrangement. Thank you and look forward to cooperating with you!