1.PLC ballast Class B2 2.good quality,low price,noise free 3.long lifetime guarantee 4.prompt delivery available PLC ballast Class B2 Features:- EEI= CLASS B2- long lifetiem guarantee- CE, TUV, ROHS approved- prompt delivery avaiable Should any of the products interested to you , pls. do not hesitate to contact us, we would like to give a quotation upon receipt of your detail inquiry.