Sino-NSH-CP series is an oil purification system with thermal, filtering and centrifugal separation processing, with capacity from 1500 liter/hour to 6000 liter/hour. Sino-NSH-CP series is especially designed for the oil industry for the purification and recycling of liquid oil. This series is designed to overcome the harmful effects of oil contaminants, water and solid particles from fuel oil, lubricating oil and other mineral engine unit and land generator unit of power station so as to reduce wear of diesel engine and other machine, and prolong the serving life. The model is also used to separate two unsolvable liquids with different specific gravity or remove small amount of solid particle from liquid.