صفحه ی اصلی سوالاتدسته بندی: اطلاعات عمومیWhat are the four stages of refining crude oil?
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What are the four stages of refining crude oil?
 
 

Refining end-products

The primary end-products produced in petroleum refining may be grouped into four categories: light distillates, middle distillates, heavy distillates and others.