SDHM Heavy Machinery provides metal welded structure machining services for technical engineering companies by supplying strong technical strength and more than 30 certified welding specialists. Our welders are certified under BV, LR, DNV, UT, MT, and other industry relevant certifications. We hold the skill and training levels of our welders in great importance and our technical experience has been rich, enabling us to solve all kinds of issues in the construction equipment, some before they even appear.