Sang Hai, formerly known as Chen Jinhui, is the general manager and investment director of an asset management company. He has participated in the national firm futures competition for many times and won awards. After more than ten years of ups and downs, after ultra-short futures day, trend tracking, programmed trading and band trading, it has formed its own set of N-band trading system with strong vitality, and won many awards in the firm futures competition.

Futures are the subject matter of present trading and future delivery. This subject matter can be gold, crude oil, agricultural products, financial instruments, financial indicators and other commodities. The delivery date of futures can be one week later, one month later, three months later or even one year later.