Stock Index Futures

It seems that Chinese government will introduce the Stock Index Futures to the market this year. Lots of company are expecting that as soon as the SIF launched, they will be ready for making a profit of it. But what is the main functions of SIF? Generally the SIF have three functions:

1. arbitrage
2. hedging
3. invest

It is a question that whether SIF will perform as well in Chinese market as in western market. Will this product lead to another crisis of weak Chinese stock market. We will see...