... want long business,not once business!So we will keep the best quality for you!WarrantyThere ... any problem with the bulb or ballast, we will send replacement with your new order.PriceMore than competitive! ... matching your mind,you can send it back to us,and we will send your payment back.We ... this way!Delivery-TimeFor small quantity,we will send you goods within 3days after get the payment,never delay ...