[Class : 4] Production Of Coke And Semi Coke Products Manufacture Of Other Petroleum N.E.C. (Includes Manufacture Ofpetroleum Jelly, Micro Crystalline Petroleum Wax, Slack Wax, Ozokerite,Lignite Wax, Petroleum Coke, Petroleum Bitumen And Other Residues Of Petroleum Oils Or Of Oils Obtained From Bituminous Minerals)