Testing and inspecting all types of goods [and materials] of others in fields including electrical, [chemical,] mechanical, and optical goods and materials; conducting engineering and testing research and making engineering analyses, and distributing printed reports in connection therewith; testing and inspecting all types of goods and materials of others[ including textiles, namely, natural and synthetic fibers and articles manufactured there from, paper, paint, varnishes, lacquers and related products, ferrous and non ferrous metals, plastics, glass, rubber, and vehicular tires, and making engineering analyses and distributing printed reports in connection therewith; Testing and inspecting all types of goods and materials of others] in the fields of structural equipment namely, [doors and windows,] lighting, heating and cooling equipment, radio and television equipment, electric cables, [rugs,] medical and dental electrical equipment, refrigerated display cases, security systems, retail store check out stands, regulated power distribution units for computers, power supply for computers, computer printers, computer network interfaces, modem cards, touch panels for use in connection with computers, and automatic bank teller machines