1. handling fee: futures trading needs to pay a certain handling fee, while the handling fee of soda ash futures is higher, and each lot (that is, each ton) needs to pay a handling fee of 100 yuan.

2. Spread: Futures trading needs to pay a certain spread. The spread refers to the difference between the buying price and the selling price, and it is also a part of the transaction cost.

3. Slippage: In futures trading, the actual transaction price will deviate from the expected price, which will also lead to an increase in transaction costs.