2D type,Ultraviolet lamp,the lamps are suitable for fmily,office,hospital and etc. 28W 2D UV Lamp 1.We are the professional manufacturer. 2.Good quality and competitive price. 3.OEM is acceptable 4.220v/110v,50/60Hz5.CE/ROHS certifications6.ultraviolet germicidal disinfection methods are purely physical, with simple and convenient, broad-spectrum efficient, no secondary pollution,