OKA Concrete Industries was established in 1981and is one of the largest manufacturer of precast concrete  products  in  Malaysia. The OKA Group obtained MS ISO 9002 Certification in 1998 and was upgraded to ISO 9001:2000 in 2003. Furthermore, a wide range of  OKA products have attained product certifications by SIRIM QAS and UKAS. OKA Group is a major supplier of concrete pipes, concrete spigot & socket pipes, box culverts, L-shape retaining wall units, concrete porous subsoil pipes, readymixed concrete, concrete septic tanks, precast manhole components, reinforced and prestressed concrete square piles, and other concrete products to cater for the Malaysian infrastructure, sewerage, construction and highway industry.