Petrochemical industry for short, refers to the field of chemical production with petroleum as raw material in the chemical industry, mainly including all kinds of fuel oil (gasoline, kerosene, diesel oil, etc.) and lubricating oil, as well as liquefied petroleum gas, petroleum coke, paraffin, asphalt, etc., is an important part of the chemical industry, plays an important role in the development of the national economy, is one of the pillar industry sectors of China. Petrochemical enterprise production process is complex, chemical equipment tower kettle group, pressure pipeline crisscross, chemical equipment there are more flammable, explosive, toxic, harmful corrosive media. According to the characteristics of the petrochemical industry, Dalton provides users with a complete set of solutions such as clock synchronization server, isolated safety grid and surge protector.