Isang holdings: Isang Holdings was established in 2014 focusing in Engineering. Manufacturing and Engineering Design of steel door frames, Louvreâs, Purpose made and Transformer room doors of high quality. Equipment Supply, Continuous Improvement and Commissioning. Isang Holdings has its basis in Germiston, Leondale in the Gauteng Province of South Africa. Isang Holdings … [Read more...] about Isang holdings