Chongqing Knowledge Import & Export Co,. Ltd

Chongqing Knowledge Import & Export Co., Ltd is located at Chongqing, China, the hometown of machinery. It was formerly known as a manufacture which was engaged in waste oil analysis and oil filter manufacture at the beginning of 1990. The manufacture annually developed 3--10 oil purifying patents. In 2010, the manufacture established a trading company for the overseas sales of oil filter and its name is Chongqing Knowledge Import & Export Co., Ltd    Now we have developed into a leading oil enterprise combines research & development, manufacturing, sales and service in one. Till now, we have gained more than 40 patens for oil filters and honored achieved the national high-tech innovation invention awards for several times.      We have created 8 unique advantages in all over the oil purifier industry.The only manufacturer who is able to actually restore the used oil to its original color as transparent as brand new oil; The only man... [详细介绍]