# Kai Synthetics
If you deposit KAI as collateral, it will be converted to Mintable Value that allows you to issue ksAssets(Kai Synthetics Assets).
Please deposit KAI assets into my wallet before deposit the KAI as collateral.
{% content-ref url="/pages/-Magjvconpt-PekqqMI8" %}
[How to buy KAI](/kai-protocol/english/how-to-guides/kai-protocol-service-guide/kai.md)
{% endcontent-ref %}
## Approve Contract
* When accessing Synthetics from the menu, each contract **\[approval]** is required
* When approval for all items is completed, you can see the screen below.
## **Collateral**
* Kai can be withdrawn and collateralized through the button at the center of the screen
※ Synthetic asset mint, transmission, and repayment fees may change depending on the service situation.
* Collateral is only available for KAI, and the collateral ratio is 150%.
* If you deposit KAI as collateral, it will be converted to Mintable Value that allows you to issue ksAssets.
* If the KAI price rises or the Oracle price of ksAssets falls, the available issuance will rise so you can withdraw your collateral at any time through \[Withdraw] for the collateral ratio surplus.
## **Mint**
At the bottom of the screen, you can Mint, Repay, Sell, and Buy each ksAsset.
1. Click the \[Mint] button of the ksAsset you want to Mint.
2\. Enter the amount within the mintable amount and click the \[MINT] button to mint the corresponding ksAsset.
* Please refer to the Mint fee and limit ratio below for the entered minting volume.
* ksAssets can be minted only during the operating hours of the exchange (where price information of the real underlying asset can be received).
* Within the mintable amount, ksAsset can be minted based on the Oracle price, and a 0.5% fee is deducted as synthetic assets.
* The mintable amount is reduced by the value of the minted ksAssets and the collateral ratio is changed.
## **Repay**
* When you mint ksAssets, you are obligated to repay the same asset and quantity, and you need synthetic assets of the same type and quantity for repayment.
1. When you click the \[Repay] button for the minted ksAsset, the following pop-up appears.
2\. Enter the amount to be repaid by referring to the minted balance and repayable balance, and click the \[REPAY] button.
* Based on the Oracle price at the time of repayment, a 1.5% fee will be deducted from the collateralized KAI.
## **Buy / Sell**
1. Click the Buy/Sell button for each ksAsset.
2\. Each ksAsset is linked to Klayswap as shown in the image below to buy/sell.
## Use case
* If the price of the minted ksasset is higher than the oracle price of the real underlying asset, a premium is generated by making a profit. **Therefore, by minting and selling ksAsset, a premium price difference can be obtained.**
* If the price of the minted ksasset is lower than the oracle price of the real underlying asset, **By supplying liquidity of minted ksassets, sKAI can be distributed according to the boost results.**
to supply liquidity - You can go to Klayswap through the link in the image below
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