Second Intelligent Equipment design and develop various types of reverse osmosis cartridge element making/fabricating machines, and RO membrane rolling machines. The machines range from semi-automatic, automatic domestic RO, and industrial SWRO cartridge element, e.g. automatic membrane, spacer slicer; carrier membrane automatic slicing, indexing, and welding machines; automatic or semi-automatic RO element dispensing and spiral winding machines. They are suitable for the water purification industry, SWRO desalination cartridge element processing.