??????? The cleaning center, established in 1994, with 12 engineers and 35 skilled operators, can fully meet the needs of all production with FLOW, NLB and other 8 high-pressure cleanings, which the highest pressure goes up to 2800Kg / cm2 and the maximum flow up to 160L / min. Started with its own business, it has mainly undertaken the routine maintenance of all production facilities in Qilu Petrochemical Company. Meanwhile, it has also engaged in the cleaning in Yanshan, Tianjin, Dongying, Yantai, Qingdao to build up the good shape of Qilu Building.