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Black Diamond Refinery Co. was established in 2020 as a limited liability (Ltd.) company to prepare, package and distribute and export all types of petroleum products including all types of bitumen, vacuum bitumen, gasoil fuel and Gilsonite in observance of all international standards. This Company is honored to supply most high quality products in the most economical way to domestic and international consumers around the world. Black Diamond Refinery Co. has cooperation with biggest Iranian gas and petroleum producers and presents a diverse portfolio of products upon costumersA A A A A A A AcA A A A A A A A A A A A A A A A request.