... YOUR ENQUIRIES:MOBILE PHONE: 0086-13969108860 Greatman Autech Co.,Ltd mainly manufacture oil filters, PP, PU, environmental-friendly ... filters (FILTER ASSY-FUEL) ,etc.Greatman Autech Co.,Ltd had passed ISO9001:2000 Certification of quality management system . ... material and our products have been tested in Shanghai Internal-combustion Engine Testing Center and First Automobile of Changchun, all the ...