Advanced CTOD Testing Solution Meets Vietnam’s Booming Infrastructure Demand with CE/ISO Compliance and Precision Material Validation​. Responding to Vietnam’s unprecedented infrastructure expansion and growing demand for high-reliability material testing, a cutting-edge 500kN Electro-Hydraulic Servo Fatigue Testing Machine with dedicated CTOD (Crack Tip Opening Displacement) testing functionality has officially launched in the Vietnamese market. Certified to CE and ISO standards, this robust testing system is tailored to address the critical structural integrity requirements of Vietnam’s $500 billion infrastructure program ¹⁾, supporting industries including construction, steel manufacturing, automotive, shipbuilding, and engineering research.