Last week, the domestic market price of class I and II base oil continued to decline steadily. The enthusiasm of downstream purchase and sales was not good. Refineries and middlemen moved slowly, with an average reduction of 50-200 yuan / ton. The prices of some refineries in Shandong and South China fell, while those in East China, North East and North China remained stable. Next week, the oil prices in Europe and the United States will be straightened out in a horizontal direction. The oil price center may move down in a narrow range, and the pressure on resource supply will increase. However, the terminal demand is difficult to recover significantly. The bearish attitude of the industry is heavy. It is expected that the base oil market will maintain a stable and downward exploration mode this week.