Secondary sector of the economy

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The secondary sector includes industries that produce a finished, usable product or are involved in construction.

This sector generally takes the output of the primary sector and manufactures finished goods or where they are suitable for use by other businesses, for export, or sale to domestic consumers. This sector is often divided into light industry and heavy industry. Many of these industries consume large quantities of energy and require factories and machinery to convert the raw materials into goods and products. They also produce waste materials and waste heat that may cause environmental problems or cause pollution. The secondary sector supports both the primary and tertiary sector.

Some economists contrast wealth-producing sectors in an economy such as manufacturing with the service sector which tends to be wealth-consuming.[1] Examples of service may include retail, insurance, and government. These economists contend that an economy begins to decline as its wealth-producing sector shrinks.[2] Manufacturing is an important activity to promote economic growth and development. Nations that export manufactured products tend to generate higher marginal GDP growth which supports higher incomes and marginal tax revenue needed to fund the quality of life initiatives such as health care and infrastructure in the economy. The field is an important source for engineering job opportunities. Among developed countries, it is an important source of well paying jobs for the middle class to facilitate greater social mobility for successive generations on the economy

Largest countries by industrial output according to IMF and CIA World Factbook, 2016
Economy
Countries by industrial output in 2016 (billions in USD)
(01)  China
4,566
(—)  European Union
4,184
(02)  United States
3,602
(03)  Japan
1,368
(04)  Germany
1,050
(05)  India
672
(06)  South Korea
531
(07)  United Kingdom
505
(08)  France
478
(09)  Italy
442
(10)  Russia
424
(11)  Canada
424
(12)  Brazil
392
(13)  Indonesia
376
(14)  Australia
355
(15)  Mexico
346
(16)  Spain
312
(17)  Saudi Arabia
276
(18)  Turkey
232
(19)  Taiwan
191
(20)  Poland
180

The twenty largest countries by industrial output in 2016, according to the IMF and CIA World Factbook.


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