hello sir, i like to buy big quantity of sunflower oil and corn oil. 1. i need price of both, sunfloewr oil 500mt everymonth, corn oil 500mt every month.2. i need to visit your manufactory and place order by month.3. i need to send documents and certfication of your manufactory.4. i need to know your payment.5. if you are not manufactory or can not show me to visit manufactory, please do not contact me. thanksonly for refiner and manufactory ,thanks my mobile: 0086-1868111042email: 664820443#qq.com