Class I medical devices, such as surgical instruments (knives, scissors, pliers, forceps, needles, hooks), stethoscopes (without electrical energy), reflectors, reflective lamps, medical magnifiers, (for traditional Chinese medicine) gua sha boards, adhesive plasters, breathable adhesive tapes, surgical gowns, surgical hats, examination gloves, and fluid collection bags. The second category of medical devices, such as sphygmomanometers, thermometers, electrocardiographs, electroencephalograms, surgical microscopes, acupuncture needles (for traditional Chinese medicine), hearing aids, skin staples, condoms, condoms, sterile medical gloves, sleep monitoring system software, ultrasound three-dimensional system software, pulsatility software, and so on. Class III medical devices, such as cardiac pacemakers, external counterpulsation devices, vascular endoscopes, ultrasound tumor focusing knife, high-frequency scalpel, microwave scalpel, medical magnetic **** vibration imaging equipment, cobalt 60 therapy machine, positron emission tomography device (PECT), implantable devices, implantable artificial organs, vascular stents, intravascular catheters, disposable infusion sets, blood transfusion apparatus, etc..