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About product and suppliers:
        Alibaba.com offers 18,703 crude oil refining products. About 59% of these are oil pressers, 1% are olive oil, and 1% are paper processing machinery. 

A wide variety of crude oil refining options are available to you, such as free samples, paid samples. 

There are 18,306 crude oil refining suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Thailand, and Philippines, which supply 77%, 5%, and 3% of crude oil refining respectively. 

Crude oil refining products are most popular in Africa, Domestic Market, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 2,889 with Other, 2,873 with ISO9001, and 336 with ISO14001 certification.
        
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