Ning bo waterman CO.,ltd IS A prefessional supplier of water equipment accessoires for residential and industrial use.Its main producs international standard filter cartridges,common use filter cartridges,filter housing,water purifiers for family use,reverse osmosis equipment and tubing fitting,we also supply many itmes for industial use ,as Fleck vale,pentair vessels,4040(4080) membrne housing,UV units and spare parts,ozone units.WATERMAN is a member of water quality association.