1. College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, P. R. China
2. Transportation Class in the first operation area of the Fourth Oil Production Plant of Daqing Oilfield of CNPC, Daqing, P. R. China
3. Heilongjiang Provincial Key Laboratory of Surface Active Agent and Auxiliary, Qiqihar University, Qiqihar, P. R. China