Query regarding gst

Shunaiza Shaikh (28 Points)

14 November 2020  
my company name is save life we trading in all medicines and medical equipments.and i want to business with overseas country.so now we dealing with China in direct import fetal doppler equipment in bulk order and export to saudi Arabia directly. in it there is direct trading between 1 to another.so i want to know how much gst liable to pay and how much custom duty should pay on import and export. please sir kindly ans my question.