we mainly produce oil filter which can help automobile run for 20000 kilometers without changing oil filter and oil, the core of our oil filter is plant fiber media, thus, it has a better filtering efficiency.according to SAE1806 examination,the filtering efficiency is about 87%.the biggest characteristic of our products is environmental protection and energy saving,if you are interst in our products, please fell free to contact me in the following ways:TEL:0086-29-88378861 FAX:0086-29-88378867if you want to get a even comprehensive information of our corporation and our product, you could visit our official websiteBest regards!