Tax resident vs non-resident

I will be traveling a lot for work in 2020. I can make it so I’m in Taiwan for a bit more or a bit less than 183 days.

What is the tax consequences? I see my tax rate will be 18% for non-resident. What I’m not sure is if I will be able to get standard deduction if I’m not a tax resident???

I’m in 30% tax bracket, so 18% rate may be better for me if I can get the same deduction.