The current price of alumina mainly includes handling fee and transaction tax. The handling fee is generally about 20 yuan per lot, and the transaction tax includes the stamp duty and transaction fee collected by the exchange. Stamp duty refers to the tax that investors need to pay to the state when conducting futures trading, and the tax rate is 0. 1%. The transaction fee charged by the exchange refers to the fee charged by the exchange for maintaining market order and protecting investors' rights and interests, which is generally 0.0 1 yuan per lot.