D & O Green Technologies Berhad (formerly known as D & O Ventures Berhad) is an investment holding and provision of management services company listed on the Main Board of Bursa Malaysia Security Berhad. The D&O group , via its wholly-owned subsidiary, Omega Semiconductor Sdn Bhd, is principally engaged in the provision of a full range of contract manufacturing services for the manufacture of semiconductor components which are supplied mainly to MNCs engaged on the manufacture of semiconductor products.