Unique design of 20KW with built-in industry’s highest single module power, unique back reflection protection technology and internal modular layout with high energy density (150um output), achieving ultra-high power output with the smaller size and energy saving. The laser power is continuously adjustable with high electro-optic conversion efficiency and superior beam quality. The 20KW is an ideal laser source which will greatly expand the domestic market for ultra-thick sheet cutting, laser hybrid welding, automatic welding, metal and non-metal materials cutting, welding, drilling, cladding, additive manufacturing, surface heat treatment and other applications.