Ningbo Changqi Porous Membrane Technology Co., Ltd. Was established in May, 2006. Specialized in producing ePTFE membrane and advanced ePTFE membrane filter media (pore size ranging from 0.2~ 5μ M). Our products are currently used in various air filtration applications, vacuum cleaner filtration and HEPA & ULPA filtration for cleaning room, microfiltration, medical applications etc. It is the mission of our teams to provide good quality products at competitive price