Ningbo or Shanghai Port. 0.22 Micron and 0.45 Micron PES Syringe Filter designed for Aijiren, Waters, Varian and Shimadzu Autosamplers provide trouble-free operation. Dust free workshop, prevent pollution uses. Five types of material, including Nylon, PTFE, MCE, PES and PVDF, are available. ABOUT US.