In terms of assets being purchased, liquidity sources are multiple secure and reliable decentralized exchanges on top of which Primex operates as the DEX aggregator. For a smooth trading experience, Primex offers its own aggregation mechanism described in the article.
Supported DEXs depend on the chain. For Polygon mainnet the following DEXs are supported:
Uniswap v3
Quickswap v2, v3
Sushiswap v2
Balancer
Curve
Meshswap
As for the assets being sold in margin trading, Primex provides Traders with additional liquidity offered by other users - Lenders via Credit Buckets to amplify their spot positions and thus potential gains.