do i have to explain exactly what business I have been doing with this company on my resume if I want to apply for China Z visa?

i have been on a F visa with a chinese company on business for the last year, and now they are interested in hiring me to work for them on a work visa.
My question is......on my resume do i have to explain exactly what business i have been doing with this company the last 12 months, or should i just type business relations on my resume, together with the name of the company?