Shandong Hongrun Heavy Machinery CO , LTD. has more than 10 years of experience for production and sales fitlters. Filters is a professional manufacturer of international brand filter elements .Hongrun filters has own R&D team,manufacturer,professional sales team and aperfect sales network. Our main procuts have air filters, fuel filters, oil filters, hydraulic filters, and fuel water separators for construction machines, passenger cars, commercial vehicles, buses, and trucks. We have advanced production, monitoring equipment, andall products are produced according to ISO9001 and TS16949 standard and tested.