HiNOS
From Halopedia, the Halo wiki
HiNOS is a company that produces several popular products [1]. Their products, currently unknown, can be bought at the Oh2-Hnzu stores in Old Mombasa.
HiNOS has an office building located in the heart of New Mombasa, in sector 3. The Company's logo appears to be an upside-down blue teardrop inside a pointed ellipse.