gasoline engine oil , diesel oil, lube.The quality of our products meet the national quality standard of China.Lubricants. Gasoline engine oil includes QB grade ... /40 etc. QE grade includes 10w/30, 15w/40 etc. Diesel oil includes CA grade, CC grade and CD grade. The Common ... CD grade are 15w/40, 10w, and 20/20w.Lubricants Diesel Oil