Air quality measurement apparatus, namely, particle counters; Microscopes; Road signs, luminous or mechanical; Semi-conductors; Slide-rules; Densimeters; Optical apparatus and instruments, namely, optical ports for underwater photography, dome ports for underwater photography, wet diopters, adapter lenses for underwater photography; Phototelegraphy apparatus; Precision balances; Prisms for optics purposes

Accountancy; Import-export agency services; Outdoor advertising; Advertising and marketing; Business management consultancy; Dissemination services of advertisement matter; Marketing research; Telemarketing services; Television advertising; Updating and maintenance of data in computer databases