# Commodity Module
The `commodity` module provides commodity market data.
## Functions (9 total)
### Carbon Trading
- **energy_carbon_bj** — Beijing carbon trading
- **energy_carbon_domestic** — Domestic carbon trading
- **energy_carbon_eu** — EU carbon trading
- **energy_carbon_gz** — Guangzhou carbon trading
- **energy_carbon_hb** — Hubei carbon trading
### Energy
- **energy_oil_em** — Oil prices from Eastmoney
- **energy_oil_detail** — Oil detail data
### Spot
- **futures_spot_stock_em** — Spot-stock comparison
## Usage Examples
```rust
use akshare::AkShareClient;
let client = AkShareClient::new();
// Beijing carbon trading
let carbon = client.energy_carbon_bj().await?;
// Oil prices
let oil = client.energy_oil_em("布伦特").await?;
```