... ballast.if reorder one part,saving 50%cost8.Combination design,lamp cover options as requsted.9. For growing :6400Kor 6700K for ... IC chip, ST mosfet, negative temperature coefficient magnetic components.11.No stroboscopic, anti-glare, low-temperature start, wide voltage protection, ... 3-10 daysSample free offerPacking:1pc/box,50 or 100pcs/carton with foam protectivePayment:TT,LC,Wester union,paypal is ...