# Gridex

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[Gridex](https://github.com/smartbch/gridex/blob/main/README.md) is a concentrated liquidity solution provided by the smartBCH team, pioneering the use of many small Bancor pools to make markets in user-specified ranges; unlike the NFT design of Uniswap V3, Gridex's liquidity token is an ERC1155 token, which is more advantageous in transferring liquidity and rewarding liquidity providers.&#x20;

Benswap is the first to implement a concentrated liquidity solution on smartBCH based on Gridex. You can [add](https://dex.benswap.cash/#/GriDexAddLiquidity) liquidity and [view](https://dex.benswap.cash/#/GriDexLiquidityList) liquidity. Gridex no longer offers a separate trading page, and its trading is integrated in [Aggregator Pro](/features/aggregator-pro.md).

After adding liquidity successfully, if your [liquidity page](https://dex.benswap.cash/#/GriDexLiquidityList) is not updated, you may import it manually by clicking on the "Import" button.

We support fee levels of 0.5% and 3%. Generally speaking, 0.5% is recommended for stable currency pairs and 3% for non-stable currency pairs. At the moment, in order not to disperse liquidity, we have fixed fees for trading pairs and do not support custom fees.

Gridex currently does not support tokens that need fee when using Transfer or TransferFrom.

This service is free to use. 100% of the trading fee goes to liquidity providers.

### Contracts

Gridex Factory: 0x2Bc89aF35d4D6746e52bAb46aa4c85e9f922D137

Gridex Exchange: 0xD58AebC5F57c63c90583105bFE923b965B8B63dd

Gridex Router: 0xb1964B4573521a21E3c9FC527e15e376E704Ec52


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