Secondary sector

Manufacturing and construction industries Economic sectors Three-sector model Primary (raw materials) Secondary (goods manufacturing) Tertiary (services) Additional sectors Quaternary (information services) Quinary (human services) Theorists AGB Fisher Colin Clark Jean Fourastié Sectors by ownership Business Private Public Voluntary vte In economics, the secondary sector is the economic sector which comprises manufacturing, encompassing industries that produce a finished, usable product or are involved in construction. This sector generally takes the output of the primary sector (i.e. raw materials like metals, wood) and creates finished goods suitable for sale to domestic businesses or consumers and for export (via distribution through the tertiary sector). Many of these industries consume large quantities of energy, require factories and use machinery; they are often classified as light or heavy based on such quantities. This also produces waste materials and waste heat that may cause environmental problems or pollution (see negative externalities). Examples include textile production, car manufacturing, and handicraft. Manufacturing is an important activity in promoting economi