UV phototherapy is 311 ~ 313nm ultraviolet light treatment.Also known as narrow spectrum ultraviolet radiation therapy ( NB UVB therapy ).The narrow segment of UVB: the wavelength of 311 ~ 313nm ca...
Guo Zhenlun the director of Service Trade Office of Jiangsu Provincial Commerce led a research team accompanied by Shi Kun the director of Service Trade Office of the Xuzhou Commerce, Xia Dongfeng...
