1.Double primary-filter structure, large capacity for holding particles, Multi-stage filtration system to ensure high filtration precision. 2. Special polymer materials as filter medium with the functions of broken emulsion, dewatering, removing particles 3.Duplex-Stereo film evaporation technology, equips with unique and advanced dewatering, degassing components, can rapidly and effectively remove water, gas, particles and volatile matter (such as alcohol, gasoline, ammonia, etc.) 4. Automatic backwashing system, improving working efficiency. Wooden case.