The third period is the Jiamuhe group overmature dry gas in the late Jurassic Period to the early Cretaceous. 第三期是佳木河组过成熟干气，成藏期在侏罗纪到早白垩世。
An introduction to the internal and external technological process of ethylbenzene with dry gas is made, and their techno economic indexes are contrasted. 介绍了国内外干气制乙苯的工艺流程并对比了技术经济指标。
