This is Rita from Redwood, which specialize in manufactory various kinds of energy-saving& environmental protection small electrical household appliance, together with a professional&excellent R&D team on product developing. Owned self-employed entrance right, 100% Redwood products are all exported abroad. Regarding infrared heaters, here I recommend our glass radiator series to you. As all our glass radiators are infrared radiation. They are made of double-faced safety tempered glass, with fairly smooth edge,error less than 0.5mm.no covering frame. We adopt high-tech heating films as heating elements and product thickness is only 11mm.