Arknights: Endfield

Late Game Factory Layout and Best Items Guide (Valley IV)

Arknights: Endfield Walkthrough Team

Last updated on: February 13, 2026 04:27 AM

Valley IV Late Game Factory

The late-game factory gameplay in Valley IV focuses on gearing up for the final parts of Arknight Endfield's Chapter 1. See the best production lines to set up in the late-game, some factory layouts to use, and a general late-game guide in this article!

AIC (Base-Building) Guides
Best Blueprints	Increase Power	Sub-Pac Locations
V-IV Early Factory	V-IV Mid Factory	V-IV Late Factory
Wuling Early Factory	-	-

List of Contents

Best Factory Layout
Best Blueprints
Best Items
Late Game Tips
Related Guides

Best Late Game Factory Layout

Core AIC Area Late Game Layout

Asia Codes

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The blueprint setup above will generate 18 HC Valley Batteries per minute, 5 of which are fed into Thermal Banks to provide energy for all of your Valley IV facilities. This can easily be expanded by adding additional Thermal Banks should you need more power.

This also produces 24 Canned Citrome C per minute, giving you additional goods to sell for Stock Bills. Make sure to set the Automation-Core to output two Amethyst Bottles and one Citrome Powder on each side.

Remember to place Sandleaf in the plant loops connected to the battery production lines, as well as Citrome in the plant loops connected to the Automation-Core.

Only Use Once Wuling AICs Are Running

Because this factory layout focuses on maximizing your Valley IV Stock Bill income, it does not produce any gear materials like Cryston Components.

As such, only use it once your Wuling AICs are running, which will provide you with important Wuling products such as Xiranite Components and LC Wuling Batteries.

Wuling Starter Factory Layout Guide

Sub-PAC Late Game Layout

Buck Capsule A and Amethyst Bottles


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This blueprint, which should be placed on two of your Valley IV Sub-PACs, will each produce 6 Buck Capsule A per minute, as well as the Amethyst Bottles needed to craft Canned Citrome C in the Core AIC.

Make sure to set the Automation-Core outputs to two Amethyst Ore on each side. Place Sandleaf in the two plant loops located in the upper corners, and place Buckflower in the two plant loops in the lower corners.

Buck Capsule A and Origocrust


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This blueprint, which should be placed on your last Valley IV Sub-PAC, will also produce 6 Buck Capsule A per minute. Additionally, it will craft 20 Origocrust per minute to use up the Originium Ore left over from battery production. You can sell these Origocrust for additional Stock Bills.

Remember to set the Automation-Core to output Originium Ore to the connected Refining Unit. Additionally, place Sandleaf in the two plant loops located in the upper corners, and Buckflower in the two plant loops in the lower corners.

Best Late Game Blueprints

Sandleaf Powder

Blueprint Codes
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When producing Sandleaf Powder, remember to use all three output ports in the Shredder Unit to avoid clogging it up. You can then feed all three outputs into a Protocol Stash to send them back to your Depot.

The Automation-Core in particular is perfect for Sandleaf Powder production, as you can have up to nine output streams using a relatively small space. This also frees up your Depot Buses, allowing you to use them for other production lines.

Create Sandleaf Loop Farm

Blueprint Codes
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Due to the large amount of Sandleaf you will need (hundreds per minute), we highly recommend using an Infinite Loop Farm to get the Sandleaf you need.

The layout shown above, for example, is very compact, and does not need an input from your PAC or from a Depot. Because of this, you can build it in a corner of your AIC, freeing up space for other production lines.

Cryston Components

Cryston Component Production Line
The first ingredient you need when making Cryston Components is Packed Origocrust. You can make this by shredding Originium Ore into Originium Powder, then grinding it with Sandleaf Powder to get Dense Originium. Afterward, refine it twice to get Packed Origocrust.
The second ingredient you need when making Cryston Components is Cryston Fiber. You can make this by refining Amethyst Ore into Amethyst Fiber, then shredding it into Amethyst Powder. This is then ground with Sandleaf Powder to make Cryston Fiber.
The final step is to combine Packed Origocrust and Cryston Fiber into a Cryston Component using the Gearing Unit. Take note that you will need two of each input to ensure that the Gearing Unit does not stall from a lack of materials.

Cryston Component Codes

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Buck Capsule A

Buck Capsule A Production Line
The first ingredient you need when making the Buck Capsule A is Ground Buckflower Powder. You can make this by shredding Buckflowers, then grinding it with Sandfleaf Powder. Make sure to connect two of the Shredding Unit's outputs with the Grinding Unit.
The second ingredient you need are Steel Bottles. To make them, you must first refine Ferrium to make Ferrium, then shred it to make Ferrium Powder. Afterward, feed two Ferrium Powder outputs into a Grinding Unit with Sandleaf Powder. This will give you Dense Ferrium Powder, which you must then refine into Steel. Do this twice, and feed both Steels into a Moulding Unit to turn them into Steel Bottles.
To craft Buck Capsule A without any waste or clogging, you must feed two Ground Buckflower Powder inputs and two Steel Bottle inputs into a Filling Unit, resulting in a Buck Capsule A.

Buck Capsule A Codes

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SC Valley Battery

Blueprint Codes
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The production line for the SC Valley Battery is very similar to that of the LC Valley Battery, with the only difference being that it uses Ferrium Parts instead of Amethyst Parts. Refine Ferrium Ore into Ferrium before passing it through a Fitting Unit to make Ferrium Parts. Meanwhile, you must also shred Originium Ore into Originium Powder.

To prevent waste and clogging, make sure to feed two Ferrium Part inputs and three Originium Powder inputs into a Packaging Unit to make an SC Valley Battery every ten seconds. If you want to maximize your power output, you can output the batteries to up to four Thermal Banks per Packaging Unit.

HC Valley Batteries Are A Good Alternative

Blueprint Codes
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Alternatively, you can also start creating HC Valley Batteries to further increase your power output. Each HC Valley Battery can provide 1,100 Power in a Thermal Bank, which is roughly 2.6 times the amount an SC Valley Battery can provide.

It is important to note, however, that this production line takes up a lot of space, and uses a large amount of resources. Only invest in using HC Valley Batteries once you are sure you can both fit the production line into your available space, and provide the needed materials without affecting other production lines.

Best Items for Late Game

Sandleaf Powder Is The Most Important Item

Input	Time	Product
Sandleaf x1 (30/min)	→ (2s)	Sandleaf Powder x3 (90/min)

For the late-game section of Valley IV, you will encounter the Sandleaf, which, when processed into Sandleaf Powder, is the most important item at this point in the game.

This is because everything you will be crafting in the late-game will use Sandleaf Powder. As such, securing a consistent supply of Sandleaf Powder is a must.

Best Blueprints and Code Sharing Board

Sandleaf Can Be Found in Power Plateau

Arknights Endfield Sandleaf Locations.png
You can first find Sandleaf in the Plateau Trunkway, located in the Power Plateau. You will gain access to this location upon reaching Authority Level 34 and starting the quest Entering the Endgame.

Prioritize Cryston Components, Buck Capsules, and Batteries

Input	Time	Product
Packed Origocrust x10 (60/min) Cryston Fiber x10 (60/min)	→ (10s)	Cryston Component x1 (6/min)
Ferrium Part x10 (60/min) Originium Powder x15 (90/min)	→ (10s)	SC Valley Battery x1 (6/min)
Steel Bottle x10 (60/min) Ground Buckflower Powder x10 (60/min)	→ (10s)	Buck Capsule A x1 (6/min)

Once you have secured Sandleaf Powder production, prioritize crafting Cryston Components, Buck Capsule A, and SC Valley Batteries.

Cryston Components are used to craft Level 50 Purple Rarity Gear, while the SC Valley Battery is a direct upgrade of the LC Valley Battery when used in Thermal Banks. Finally, the Buck Capsule A is an even stronger healing item, and is used as an Outpost trade good alongside the SC Valley Battery.

Production Lines Can Be Split Into Smaller Parts

Because of the complexity of the recipes (up to five steps with numerous input and output streams), we highly recommend splitting the production into smaller parts. This makes it easier to manage, and allows you to build the production line over numerous AICs, which can help if you need space.

Splitting the production line requires extensive use of Protocol Stashes and the Depot Buses, so make sure that you have them unlocked.

Final Tier of Equipment Before Chapter 2

The mid-game spans from the end of the early game at around Authority Level 18 until you are able to grind Cryston at Authority Level 34. Be sure to evolve together with your factory to get stronger items and gear!

Valley-IV Factory Layout Guides
◀ Mid Game	Wuling Starter Factory ▶

Late Game Tips

Improve Your Regional Development Level

At this point in the game, you should have access to most, if not all, of the mining areas in Valley IV. To further increase your ore collection rate, you must improve your Regional Development Level. This not only unlock new ore nodes, but it also increases ore node purity, increasing the amount you can get from them.

Regional Development Management Guide

Swap to SC Valley Batteries in Thermal Banks

SC Valley Batteries provide almost double the power that LC Valley Batteries can, so make sure to swap to SC Valley Batteries as soon as you can. Because of how similar the recipes are, you should have little problem converting your LC Valley Battery production lines to start producing SC Valley Batteries instead.

You can also choose to use HC Valley Batteries instead, but only if you have the space and resources to do so.

Thermal Bank Recipes and How to Use

Further Expand Your Factory

Factory Expansion in AIC
Since you should already have access to the AIC Steward found near your PAC and Sub-PAC Hubs, make sure to further expand your factories, namely by unlocking more Depot Buses to help streamline your production lines.

To get the Stock Bills needed to expand your factory, you can either do Outpost Trading, or participate in stock market trading in the Stock Redistribution facility.

How to Farm Stock Bills Fast

Arknights: Endfield Related Guides

AIC Factory Partial Banner

AIC Factory Guide

AIC Progression Guides

Valley IV Progression
Early Game Layout	Mid Game Layout	Late Game Layout
Wuling Progression
Starter Factory in Wuling

AIC Factory Guides

Best Blueprint Codes and AIC Layouts	Best Zipline Locations	Best Gear Blueprints
All AIC Buildings	All AIC Factory Locations	How to Create and Share Blueprints
How to Increase Power Output	How to Solve Clogged Facilities	How to Move Items Between Regions
Theoretical Data Explained	How to Connect Relay Towers	How to Increase AIC Storage
Differences Between Portable and Electric Mining	How to Expand the Factory	-

AIC Factory Simulation Guides

Reactor Expansion Guide

Depot Bus Integration Guide

Belt Integration Guide

AIC Buildings by Type

Resourcing	Logistics	Processing
Power	Combat	Exploration
Xiranite	-	-

Comment

Anonymous 2 days

Will there be a Core AIC Area Late Game Layout code for other regions?

Anonymous 3 days

For HC Battery, USA Server Use: EFO01893iO880U1aUI73.

Post (2 Comments)

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Arknights: Endfield Walkthrough Team

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Late Game Factory Layout and Best Items Guide (Valley IV)

Best Late Game Factory Layout

Core AIC Area Late Game Layout

Only Use Once Wuling AICs Are Running

Sub-PAC Late Game Layout

Buck Capsule A and Amethyst Bottles

Buck Capsule A and Origocrust

Best Late Game Blueprints

Sandleaf Powder

Create Sandleaf Loop Farm

Cryston Components

Cryston Component Codes

Buck Capsule A

Buck Capsule A Codes

SC Valley Battery

HC Valley Batteries Are A Good Alternative

Best Items for Late Game

Sandleaf Powder Is The Most Important Item

Sandleaf Can Be Found in Power Plateau

Prioritize Cryston Components, Buck Capsules, and Batteries

Production Lines Can Be Split Into Smaller Parts

Final Tier of Equipment Before Chapter 2

Late Game Tips

Improve Your Regional Development Level

Swap to SC Valley Batteries in Thermal Banks

Further Expand Your Factory

Arknights: Endfield Related Guides

AIC Progression Guides

AIC Factory Guides

AIC Factory Simulation Guides

AIC Buildings by Type

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