In 2009, our company signed a contract with Fujian United Petrochemical Co., Ltd. for the second section of the chemical cleaning of the Fujian Refinery Ethylene Project, undertaking the cleaning work of equipment, spherical tanks, and pipeline for the butene-1 system, hexene-1 system, isopentane system, unqualified butadiene system, and butadiene system; In 2014, our company also undertook the chemical cleaning and degreasing project of the 18/4 million ton/year ethylene oxide/ethylene glycol (EO/EG) plant pipeline, as well as the new ethylene cracking furnace chemical cleaning project for ethylene debottleneck and supporting engineering. And successfully implemented chemical cleaning work for ultra-high pressure pipelines, VHS pipelines, and other components in the 990000 ton/year ethylene cracking unit renovation project.