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4.4 IndustryA. Overall Contribution to EconomyIn the last four years, the industrial sector has accounted for 20% of all foreign exchange earnings for Tanzania, second only to the agricultural sector. Its share of the GDP was 8.3% in 1991-93. Also, the industrial sector accounts for 18% of the total number of wage earners and is the largest single source of urban employment. In addition, the sector utilizes many of the products from other sectors in its production processes, as well as produces products which contribute to other industrial processes. Five sub-sectors make up the sector with the following contributions: Manufacturing (48%), chemicals (24%), metals and engineering (13%), wood and allied products (9%), and non-metal sub-sectors (6%). The manufacturing industries sub-sector includes the following industries, all of which are emphasized for increased investment by the Investment Promotion Policy:
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