Dr. Yamani said the production of machines and tools is the largest sector, with 803 factories involving an investment of SR 20 billion (U.S. $ 5.33 billion). In terms of capital, the production of chemical and petroleum products leads the Kingdom's industrial sector with investments amounting to more than SR 150 billion (U.S. $ 40 billion) in 638 factories. There are 556 factories for non-mineral industries with a capital investment of SR 25 billion (U.S. $ 6.67 billion); 491 factories for foodstuffs, with investments of SR 15 billion (U.S. $ 4 billion); 183 plants for paper manufacture and publication ventures, with investments of SR 5 billion (U.S. $ 1.33 billion); 134 lumber factories, with investments of SR 2 billion (U.S. $ 0.53 billion); and 133 ready-made clothing factories with investments of SR 2.8 billion (U.S. $ 0.75 billion).