I am US base company doing import from China I like to bring my full time Buyer from other country

Hi,

I am USA Base company I visited China 5 times last 6 months to check the products and purchase this time I like to bring my full time buyer from Ukraine who can stay in China for next 3 to 5 years I like to take care payroll and all the living Expense for this person what I need to do to get permeant visa Please help me Thanks