NSH oil purification equipment series are extensively used in the fields of electric power, petroleum, natural gas, mechanical manufacture, steel, metallurgy, railway, aviation etc. Which consume lubrication oil. It's the principal products covering more than 100 kinds of products in 7 series and can meet different needs of customers. For special demands of customers, we offer particular solutions. NSH products are not only able to low customers' cost and security risk effectively, but also solve the problem of which the waste oil contaminates environment.