Founded in 2000 by industry veterans, Weld Systems Integrators manufactures resistance welding equipment and integrates robotic resistance and MIG welding cells from its Warrensville Heights, Ohio facility. WSI is especially known for capacitor-discharge systems that weld fasteners to hot-stamped boron and other press-hardened steels, backed by an in-house laboratory for process testing and validation. The company also repairs, rebuilds, and supports both its own and legacy welding machines.