C5 / C6 isomerization technology is the core technology of our company. Now our company has a full range of isomerization technologies with medium temperature, low temperature and super acid catalyst as the core. In particular, the intermediate temperature isomerization technology has the characteristics of less investment, green catalyst and so on. This is our first 200000 t / a isomerization unit in Baolai Petrochemical Group. The unit has been running smoothly for four years, and its indexes have reached the advanced level at home and abroad.