One Gasmaster Holdings Bhd. engages in providing environmental monitoring, gas detection and piping, and industrial hygiene services through its subsidiaries. It focuses on combustion, process efficiency, and safety solutions; gas detection system solutions; environmental monitoring solutions; industrial hygiene monitoring solutions; gas piping services; and calibration services. It operates through the following segments: Trading of Products and Parts, Maintenance and Calibration Services, and Projects. The Trading of Products and Parts segment includes instruments, parts, and components. The Maintenance and Calibration Services segment provide maintenance services to support and sustain existing operations. The Projects segment relates to providing the design, supply, installation, testing, and commissioning of new environmental monitoring, gas detection and industrial hygiene solutions, and gas piping solutions. The company was founded on June 12, 2023 and is headquartered in Petaling Jaya, Malaysia.