[ethylene Glycol options and Styrene options will be listed on May 15]-on April 19, the big trading house officially issued a notice on ethylene glycol options and styrene options contracts and matters related to listing and trading, defining the listing trading time, listing trading contracts, listing benchmark price, and so on. According to the notice, ethylene glycol options and styrene options will be listed for trading on May 15, 2023. In terms of contract rules, the design ideas of ethylene glycol options and styrene options contracts are basically the same as those listed in Dashang Stock Exchange. The types of contracts are divided into call options and put options. The trading unit is 1 hand, and the minimum change price is 0.5 yuan / ton. The limit board, contract month and trading time are all the same as the underlying futures contract, and the exercise mode of American options will still be adopted. The position limit of ethylene glycol options is 8000. The position limit of styrene options is 12000 lots, which is consistent with the standard of the starting position limit of the underlying futures contract in general months. In addition, the firm also made clear in the notice the listing benchmark price, trading order, exercise and performance of the two options, related fees, market maker system and contract inquiry.