D & O Green Technologies Berhad is a Malaysia-based investment holding company. The Company is engaged in the provision of management services (including manufacturing plant facility services). The Company's segments include Asia, Europe, United States of America and Other Countries. The Company's subsidiaries include Omega Semiconductor Sdn. Bhd. (Omega), which is an investment holding company; Dominant Opto Technologies Sdn. Bhd. (Dominant), which is engaged in manufacturing semiconductor components and machineries; Dominant Opto Technologies Korea Inc, which is engaged in merchandising semiconductor components, and Dominant Opto Technologies (Shanghai) Co., Ltd., which is engaged in development of semiconductor application technology, installation, wholesale and retail of semiconductor devices, electronic components, electrical equipment for lighting, electronic display screen, lighting fittings, import and export of related products.