ZHUAN LV is one of the world's largest suppliers of filtration and separation products to the oil, gas, chemical, food, beverage and pharmaceutical industries. In 1999, Shuang King Filtration Technology Co., LtdZhuan Lv original factory was set up and start oil filter products manufacture, Shuang King is mainly focus on oil and gas filtration product's research, development and production, the featured products include filter element for hydraulic system, lube system; coalescing and separation filter cartridge for fuel and gas system.