... ,400V UL,CUL, CE,,TUV, GS OEM&ODM are available. greenhouse lighting ballast Welthink WEX120 and WEX230 series Horticultural Lighting ballast ... specially designed for horticultural lighting in greenhouse. Lamp holder, mounting hangers assembly, we have different reflectors for ... UL,CUL,CE,GS listed, 100V~240V, 277V,347V,400V greenhouse lighting ballast