12 mth Business Visa application with Multiple entries to China.

Last Friday I submitted an application in BKK with all the paperwork as shown at the consulate ( 7 items) I am an Australian on a 30 day L type in Thailand. I had a letter from Chinese company requesting a 12 month, multi entry one to provide technical support to the company. They would only issue an F category for a duration of 7 days. I gave them a copy of Intinerary which showed accommodation for 5 days. Would I have been better applying for it?