Scientific and technological services being research and design services in the field of sound quality and reproduction; conducting of technical, scientific feasibility project studies; technical research services in the field of sound quality and reproduction; research and development of new products for third parties; industrial design services; design, development, installation and maintenance of software; design and development of electric and electronic apparatus and equipment; design, d...

[ optical apparatus and instruments, namely, spectacles and sunglasses; cases and frames for spectacles and sunglasses, cloths for cleaning spectacles and sunglasses; computer carrying cases; and parts and fittings for all of the aforesaid goods ]