Since 1980s, Hangyang's petrochemical products have involved ethylene, synthetic ammonia, alkane dehydrogenation, coal-to-ethylene glycol, natural gas liquefaction and synthesis gas methane recovery, coal-to-olefins and other fields. In the research and development of cryogenic separation equipment, Hangyang has accumulated rich experience in low temperature liquefaction and separation related process package design, related equipment design, complete set supply, etc., which has filled many domestic blanks.