On-site aluminum-based contract. In fact, it can't be said that OTC aluminum is a gambling contract, and OTC aluminum is just like our normal trading. If LME aluminum doesn't work in Bloomberg futures software, you should look for downloads. If you can add, you must have it.

I don't know exactly, but some are based on the average price and some are based on the closing price. Now those softwares are all free. If you want a free QQ, please let me know and I will send you a website.