We are Satara (India) based manufacturer and supplier of Solar Box Type Cooker, which is made from Galvanised Iron (GI) and is used for cooking food. This equipment comprises three parts viz one glass sheet, one plane mirror that acts as a reflector and lastly one insulated metal box, whose inner side along with bottom is painted black. The reason for choosing black color is due to its ability to absorb extra heat in comparison to the white color. Purpose of glass cover in Solar Box Type Cooker is to permit the infra red rays of sunlight into the box, which are consequently absorbed by the blacked surface, hence heating the box. Upon extra heating, the heat is radiated out via IF rays which are then blocked by the glass sheet cover. Hence the cooker actually entraps the heats for its working.