of what materials is this kitchen set made?
does it contain formaldehyde? plastic?
The product is made up of MDF and plastic. Wikipedia's explanation of MDF is below. Medium-density fibreboard (MDF) is an engineered wood product formed by breaking down hardwood or softwood residuals into wood fibres, often in a defibrator, combining it with wax and a resin binder, and forming panels by applying high temperature and pressure. MDF is denser than plywood. It is made up of separated fibres, but can be used as a building material similar in application to plywood. It is stronger and much more dense than normal particle board.