HCMs main product line is hydraulic excavators, with the Company manufacturing many models, from medium-sized and mini excavators all the way up to 780-ton ultra-large excavators. HCM is a leader in the area of co......HCMs main product line is hydraulic excavators, with the Company manufacturing many models, from medium-sized and mini excavators all the way up to 780-ton ultra-large excavators. HCM is a leader in the area of construction machinery, and has manufacturing facilities in Europe, the U.S. and Asia. HCM also markets wheel loaders, off-road dump trucks, tunnel boring machines and other products made by HCM Group companies or in partnership with major manufacturers.