Small dimension, suitable for MP3, function cellphone, smart watch, and smart health device
Small dimension, suitable for MP3, function cellphone, smart watch, and smart health device
The emissive electroluminescent layer is a film of organic compound that emits light in response to an electric current
Small dimension, suitable for MP3, function cellphone, smart watch, and smart health device
The emissive electroluminescent layer is a film of organic compound that emits light in response to an electric current