Our company has undertaken the chemical cleaning project of the second section of the 800000 ton/year ethylene engineering chemical cleaning project at Wuhan Branch of China Petroleum and Chemical Corporation. The project includes the cleaning of the oxygen pipeline, dehydrogenation tower and extraction tower of the butadiene unit, pipeline and equipment of the high-density polyethylene unit, as well as the stripping tower of the C5 separation unit. Our company has successfully completed the work with high quality and strict requirements, and has received recognition and praise from the owner.