To prepare some circulating water aquaculture equipment, such as: factory circulating water aquaculture treatment system, raw water treatment system, fish tank, drum microfilter, protein separator, ozone generator, residual ozone remover, biofilter, composite degassing sterilizing processor, filtration sand tank, water pump, water quality monitor, ultraviolet sterilizer, oxygenator, and other aquaculture equipment and systems. I am the one who came over, it is quite good!