Carbon Brick
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The Carbon Brick is a building material in Arknights.
Item description
A carbon brick used for the facility development of Rhodes Island.
Light and highly pure, it possesses excellent workability, and is instrumental to the success of our operations.
Usage[edit]
This brick of carbon is needed for the production of polymer concretes for 
Concrete Building Material needed for the construction of Rhodes Island infrastructure facilities.
A single Carbon Brick is also worth 8 
.
How to obtain[edit]
Store[edit]
3 Carbon Bricks are sometimes available for purchase at the Credit Store for 200 
.
Regular drops[edit]
For the sake of convenience, only operations which have been released in the Global server are listed in the table below.
| Operation | Sanity | Drop(s) | Sanity per drop |
|---|---|---|---|
| SK-3 | 20 |  2 |
10 |
| SK-4 | 25 | 2 |
12.5 |
| SK-5 | 30 | – |
Workshop[edit]
| Product | Material | LMD | Morale | Requires |
|---|---|---|---|---|
1 |
 3 |
– | 2 | Clear SK-3 |