2. The bulb shape adapts to a wider range of lamps (although there are also low-frequency bulbs at present).
3. The manufacturing process is simple, and the R&D and manufacturing cost are low.
In other aspects, there are no advantages in EMI/EMC electromagnetic testing, light efficiency, life, light attenuation, power range and other technical parameters, so foreigners do not apply for patents in the high-frequency field, because the high-frequency technology content is not large, so the patents of electrodeless lamps are currently concentrated in the low frequency. But the advantage is that if foreign customers can accept and export, there is no patent barrier, which can basically be unimpeded.