AIR DRY ER ARTRIADGES 　　It can filtrate the moisture ,oil and impurtity of compressed air from air compressor ,to insure the dry and cleaness of air into air accumulator, to effectively prevent the failure of braking system resulting from the rusting or freezing of parts in braking system and to enhance the safety of automobile. 　　The advantages of the HAOGD-FILTER air dryer cartridge speak for themselves: 　　To make a clean sweep of water log in pipes , to make the work of driver much easy and convenient. 　　To purge and dry the air passages ,to prevent the rust 　　To prevent the freezing of each pipe and valve in braking system 　　To enhance the reliability of system, to extend the service life .

OIL FILTER 　 　　The critical fact for the proper operation of the engine is to keep the lubricating oil clean, or to ensure no corrosive impurity inside the lubrication oil. 　　 By using the special filter papers, the oil filter manufactured by Haogd.Co.Ltd.can ensure the good filtering performance. The impurity inside the lubricating oil can been removed effectively, and the maximum filtering efficiency and minimum wearing of the engine can been reached under minimum pressure difference, the life duration of the engine can be prolonged.

AIR FILTER 　　Air filter is the same as an inspiration system of an automobile, air filter is used to remove the impurity and the dust form the air inletting the engine. The proper operation and the life duration of the engine are depended somehow mostly on the performance of the air filter. 　　By using the top technology to inspect the corrosive particles in the air, the air filters manufactured by Haogd, Co.Ltd. can ensure the complete cleaning to prevent the corrosive particles from the air inletting the engine. Also, by means of advanced equipments, high quality filter paper with special fiber structures and good filtering precosion, the air filter of Haogd,Co.Ltd.can be used to reach the goal of highest filering offciency and best dust holding capabilty under the condittion of lowest wind resistance. Therefore, the ongine can be assurde to get the perfoumance of lowest fuel consumption and of highest power output .

FUEL FILER 　　The key fact for the proper operation of fuel injection system is clean fuel with high purity. But, it is also happende frequently that the impurity materials and pollution inlet the fuel tank when refilling the fuel .Therefore, high performance fuel filter to remove the impurity and pollution is a fuarantee for the safe operation of fuel injection system. 　　By using hegh tech, filter paper with high filtering efficiency and special function of separating fuel and water, and non-deforming central core with shutter tube strrcture, the fuel filter manufactured by Haogd.Co.Ltd .can be used to remove the impuritly and the water from the fuel, to minimze the wearing of precise parts of injection system, and to ensure the reliavility of the system.