PLS I need your advice. An equipment saling company well known in USA have a business with my company in saling of used crane and I being inviting me for 10 days and am going on behalf my company that am going to represent them as a mobile crane operator to operate the crane test run it before give out information to my company so will gonna buy the crane I have not traveled before but I have a mexico visa in my passport and never traveled will they give me visa or denied me for not and my company is a contractor to con oil company and my income is k350 monthly my company is my sponsor what else do I need to get the visa

USA company is sending invitation letter to come for a course for 10days and my company is my sponser pls what document do I need to get the visa