Energy Resources International Co Ltd, established in Taiwan in 1999, initially focused on the development of lighting equipment during its early stages. However, due to its keen observation of the technology industry trends, the company commenced research in the medical field in 2004, gradually increasing its emphasis in this area over the years.
Energy Resources International Co Ltd, established in Taiwan. With its carbon nanotube technology, ERI has developed handheld X-ray machines, which can generate high-quality X-ray at low radiation doses.


In 2013, a complete cold cathode X-ray tube was developed, utilizing carbon nanotubes as the electron source. This innovation was the subject of patents granted in the United States, Taiwan, Japan, and China.
In 2018, a handheld dental X-ray machine was introduced featuring a cold cathode X-ray tube as its core component. This groundbreaking device had been the subject of patents obtained not only in the United States but also in Taiwan, China, and various other countries.


In 2019, a versatile handheld X-ray machine designed for general-purpose applications, including extremities and chest imaging, was developed. This innovative device was designed to provide convenient and portable X-ray capabilities for a wide range of medical scenarios.
In 2022, the clinical trial for CVXair in Taiwan was successfully completed at Changhua Christian Hospital, a medical facility with 3600 beds. CVXair represents a significant advancement or medical development that underwent rigorous testing and evaluation at this prominent healthcare institution.
