Founded in 1986, Dongou specializes in polymer-based and surface layer filtration technology to deliver unmatched performance in temperature resistance, chemical compatibility, and long-term durability.

From integrated filtration–washing units and reaction–concentration systems to continuous crystallization and activated carbon regeneration, we provide tailored solutions that drive productivity and sustainability across industries.

We offer more than a product; we provide a precision-driven process. With our advanced filtration selection technology and comprehensive laboratory trials, we precisely tailor solutions to address diverse application requirements.