One Gasmaster Holdings Berhad, together with its subsidiaries, designs, supplies, installs, tests, commission, and maintenance of environmental monitoring, gas detection and gas piping, and industrial hygiene services in Malaysia, Indonesia, Singapore, Vietnam, and internationally. It also provides calibration services, including acoustic equipment calibration, gas monitoring equipment calibration, temperature and humidity calibration, pressure calibration, mass calibration, and audiometer calibration. In addition, the company engages in the trading of instruments, parts, and components. It serves manufacturing, oil and gas, and energy and power generation sectors. The company was founded in 1997 and is headquartered in Petaling Jaya, Malaysia. Address: No 18, Jalan Pju 3/48, Sunway Damansara,, Petaling Jaya, Malaysia, 47810