Industries are improvements to cities exclusive to the Monopolies and Corporations mode included in the Vietnam and Kublai Khan DLC. In Monopolies and Corporations mode, the objective is to claim the most luxury resources possible and use them to improve your civilization. Once cities own luxury resource plots, acquiring industry bonuses by building industries is the next step. Here are all the industry bonuses and how to get them in Civ 6.
How to build Industries in Civ 6
To improve the Industry tile, you must first unlock the Currency Tech. After unlocking Currency Tech, you can use a builder to improve a luxury resource with the Industry tile. There are a couple of requirements to build Industries. First, you must control at least two copies of the same luxury resource in your city. Second, you can build only one industry per city and resource type. Planning is key to securing luxury resources and building Industries for them.
All Industry Bonuses in Civ 6
|Amber, Dyes, Incense, Pearls||+25% Faith yield in the host city|
|Citrus, Cotton, Ivory, Tobacco, Whales||+30% Production towards military units in the host city|
|Cocoa, Honey, Salt, Sugar||+20% Population growth and +3 Housing in the host city|
|Coffee, Silk, Spices, Wine||+20% Culture yield in the host city|
|Diamonds, Jade, Silver, Truffles||+25% Gold yield in the host city|
|Fur, Olives (R&F)||+30% Production towards civilian units in the host city|
|Gypsum, Marble||+30% Production towards buildings in the host city|
|Mercury, Tea, Turtles (R&F)||+15% Science yield in the host city|
All luxury resources count towards your requirement, including any held by City-States you are Suzerain of. If you build an Industry over an already improved luxury resource, the improvement will be replaced with the Industry improvement. As long as you have at least copies of the same luxury resource in your civ, you can begin to build Industries. Later in the game, Industries can also be further improved into Corporations. Building Corporations is the next step to winning the game mode, as you can establish Monopolies by owning at least 60% of all of one luxury resource's tiles on the map.
For more Civ 6, check out How to make a National Park in Civilization 6 on Pro Game Guides.