Computers; Earphones; Eyeglasses; Headphones; Semi-conductors; Televisions; Chargers for batteries; Dog whistles; Protection and safety apparatus, namely, inflatable flotation devices; Protective covers for electronic reading devices; Punched card machines for offices; Sound projectors and amplifiers; Surveying instruments; Tool measuring instruments; Electric cables and wires; Gloves for protection against accidents; Measuring rulers; Nets for protection against accidents; Tablet computers