PSU is widely used in the field of electronics and electricity.PSU can be used to make electrical parts such as contactors,connectors, transformer insulators, thyristor caps, insulatingsleeves, coil skeleton, connection posts and collector rings,printed circuit boards, axle bushes, hood, TV system parts,capacitor film, brush holder [1], alkaline battery boxes, etc. Inthe field of automobiles and aviation, PSU can be used. It is usedto make protective cover components, electric gears, battery cover,detonator, electronic ignition device components, lamp components,aircraft internal parts and aircraft external parts, spacecraftexternal protective cover, etc. PSU can also be used to makelighting baffles, electric drives, sensors and so on. The demandfor polysulfone polymers used to make engine room componentscontinues to grow in the world market, mainly because of the lessheat released by these polymers when burning, the less smokegenerated, and the less diffusion of toxic gases, which fully meetthe re of safety re; PSU can replace glass inkitchen products market. Glass and stainless steel products areused to make steam dishes, coffee containers, microwave cookers,milk and agricultural products containers, egg cookers and milkingparts, drinks and food distributors. PSU is a non-toxic product,which can be made into repeatedly contacting utensils with food. Asa transparent new material, PSU is better than any otherthermoplastic in hot water resistance and hydrolysis stability, soit can be used to make coffee pots and so on. The connecting pipemade by PSU is used for glass fiber or fiberglass reinforcedpolyester facing. It has high strength outside the pipe, chemicalresistance inside the pipe, light steel tube, and transparent, easyto control. It is commonly used in the food industry and makinglantern lantern. In terms of hygiene and medical devices, PSU canbe used to make surgical plates, sprayers, humidifiers, contactlens fixtures, flow controllers and devices. Covers, dentalinstruments, liquid containers, pacemakers, respirators andlaboratory instruments, etc. PSU is used to make medical productswith lower cost than glass products, and it is not easy to break.Therefore, PSU can be used in instrument housing, dentalinstruments, heart valve box, blade cleaning system, forming box ofsoft contact lens, micro filter, dialytic membrane, etc. PSU canalso be used for dental insertion, its bonding strength is twice ashigh as acrylic acid; in daily necessities, PSU can be used toproduce heat-resistant and hydrolysis-resistant products such ashumidifiers, hair dryers, clothing steaming, camera boxes,projector components. After 0.4-1.6 MGy radiation and good drying,PSU granules are easy to be injected and moulded at 310 ~170 ~C.They are suitable for laminating materials. All polysulfones withsilane, such as PSU-SR and PKXR, can be used as adhesives forsizing glass fibers and graphite fibers to make composites, and PSUwith silane reinforced by graphite fabric can be used to makeairplane parts such as elevator and landing rudder. Adding solidlubricant polytetrafluoroethylene (PTFE) to PSU can increase wearresistance and physical and mechanical properties, and it can alsobe used to prepare wear-resistant coatings. In addition, PSU canalso manufacture various chemical processing e (such aspump cover, tower outer protective layer, etc.), food processinge, pollution control e, dairy processing eand engineering, construction, chemical pipelines, etc.