OKA Corporation Bhd is an investment holding company. The Company is engaged in the manufacturing and sale of pre-cast concrete products and trading of readymixed concrete. The Company is a supplier of concrete pipes, concrete spigot and socket pipes, jacking pipes, box culverts, L-shape retaining wall units, U-shape drain, concrete porous subsoil pipes, ready mixed concrete, concrete septic tanks, precast manhole components, reinforced and pre-stressed concrete square piles, arch bridge system, pre-stressed beam, industrialized building system (IBS) components, jetty components and other concrete products to cater for the Malaysian infrastructure, sewerage, construction and highway industry. Its products include T-Beams/M-Beams, precast concrete pipe, large diameter pipe, prestressed concrete piles and precast concrete piles. Its subsidiaries include OKA Concrete Industries Sdn. Bhd., OKA Engineering and Trading Sdn. Bhd., Real Charisma Sdn. Bhd. and Pembinaan Cahaya Emas Sdn. Bhd.