Applied to psoriasis, vitiligo, alopecia areata, chronic eczema, endogenous eczema, ... adopts NB-UVB wave band special ultraviolet lamp as physiotherapy light source, high stability and long lifeSimple principle, powerful function, ... compact and portable, manuel operation, any angle irradiationApplied to psoriasis, vitiligo, alopecia areata, chronic eczema, endogenous eczema, refractory ...